Analytical results and sanple locality map of stream-sediment, heavy-Hineral-concentrate, and rock samples from the Hawk Mountain Wilderness Study Area, 

ILLUSTRATIONS

 1). Access to the study area is provided on the east by an unimproved dirt road which runs along the northeast boundary of the study area, on the west by a graded gravel road which follows the northwest boundary of the study area and continues northward providing access from that direction, and on the south by an unimproved dirt road which passes through Hawksy Walksy Valley in the south central part of the study area. All of these roads lead off from Nevada and Oregon State Highway 140. 
The study area is situated in the transition zone between the Basin and Range and Columbia Plateau physiographic provinces. The area is underlain by a sequence over 1,500 ft (457 m) thick of Tertiary rhyolitic to dacitic ashflow tuffs and flows. Two major sets of faults that trend north-northwest and north-northeast occur within the study area. Rock units present in the study area have been described by Greene (1984) and by Noble and others (1970). The geology of the study areas is included in a geologic map of the Adel 1X2 degree quadrangle at a scale of 1:250,000 (Walker and Repenning, 1965). 
Elevations in the study area range from a low of about 4,500 ft (1,372 m) along Long Draw at the southeast end of the area up to 7,234 ft (2,204 m) at the peak of Hawks Mountain, giving a topographic relief of 2,374 ft (833 m). 

METHODS OF STUDY


Sample Media

Analyses of the stream-sediment samples represent the chemistry of the rock material eroded from the drainage basin upstream from each sample site. Such information is useful in identifying those basins which contain concentrations of elements that may be related to mineral deposits. Heavy-mineral-concentrate samples provide information about the chemistry of certain minerals in rock material eroded from the drainage basin upstream from each sample site. The selective concentration of minerals, many of which may be ore related, permits determination of some elements that are not easily detected in stream-sediment samples. 
Analyses of unaltered or unmineralized rock samples provide background geochemical data for individual rock units. On the other hand, analyses of altered or mineralized rocks, where present, may provide useful geochemical information about the major-and trace-element assemblages associated with a mineralizing system. 

Sample Collection

Stream-sediment samples were collected at 93 sites and heavy-mineralconcentrate samples were collected at 90 sites (plate 1). Rock samples were ? collected at 13 sites. Sampling density was about one sample site per 1.2 mi for the stream sediments and heavy-mineral concentrates. The area of the ? drainage basins sampled ranged from 0.12 mi^ to 12 mi z and averaged 1.7 mi . 

Stream-sediment samples

The stream-sediment samples consisted of active alluvium collected primarily from first-order (unbranched) and second-order (below the junction of two first-order) streams as shown on USGS topographic maps (scale = 1:24,000) (plate 1). Each sample was composited from several localities within an area that may extend as much as 20 ft from the center of the site symbol plotted on the map. 

Heavy-mineral-concentrate samples

Heavy-mineral-concentrate samples were collected from the same active alluvium as the stream-sediment samples. Each bulk sample was screened with a 2.0-mm (10-mesh) screen to remove the coarse material. The less than 2.0-mm fraction was panned until most of the quartz, feldspar, organic material, and clay-sized material were removed. 

Rock samples

Rock samples were collected from various types of occurrences in the vicinity of the plotted site location. Descriptions of rock samples are in table 6. 

Sample Preparation

The stream-sediment samples were air dried, then sieved using 80-mesh (0.17-mm) stainless-steel sieves. The portion of the sediment passing through the sieve was saved for analysis. 
Samples that had been panned in the field were air dried and sieved to -35 mesh; bromoform (specific gravity 2.85) was used to remove the remaining quartz and feldspar. The resultant heavy-mineral sample was separated into three fractions using a large electromagnet (in this case a modified Frantz Isodynamic Separator). The most magnetic material (removed at a setting of 0.25 ampere), primarily magnetite, was not analyzed. The second fraction (magnetic at a setting of 1.75 ampere), largely ferromagnesian silicates and iron oxides, was saved for archival storage. The third fraction (the nonmagnetic material at a setting of 1.75 amperes which may include the nonmagnetic ore minerals, zircon, sphene, etc.) was split using a Jones splitter. One split was hand ground for spectrographic analysis; the other split was saved for mineralogical analysis. (These magnetic separates are the same separates that would be produced by using a Frantz Isodynamic Separator set at a slope of 15° and a tilt of 10° with a current of 0.2 ampere to remove the magnetite and ilmenite, and a current of 0.6 ampere to split the remainder of the sample into paramagnetic and nonmagnetic fractions.) 
Rock samples were crushed and then pulverized to minus 0.15 mm with ceramic plates. 

Sample Analysis


Spectrographlc method

The stream-sediment and rock samples were analyzed for 35 elements and the heavy-mineral-concentrate samples were analyzed for 37 elements using a semi quantitative, direct-current arc emission spectrographic method (modification of Grimes andMarranzino, 1968, andMyers andothers, 1961). The elements analyzed and their lower limits of determination are listed in table 1. Spectrographic results were obtained by visual comparison of spectra derived from the sample against spectra obtained from standards made from pure oxides and carbonates. Standard concentrations are geometrically spaced over any given order of magnitude of concentration as follows: 100, 50, 20, 10, and so forth. Samples whose concentrations are estimated to fall between those values are assigned values of 70, 30, 15, and so forth. The precision of the analytical method is approximately plus or minus one reporting interval at the 83 percent confidence level and plus or minus two reporting intervals at the 96 percent confidence level (Motooka and Grimes, 1976). Values determined for the major elements, iron, magnesium, calcium, and titanium, are given in weight percent; all others are given in parts per million (micrograms/gram). Analytical data for samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon, are listed in tables 3-5. 

Chemical methods

Samples from this study area were also analyzed by other analytical methods. Rocks and stream sediments were analyzed for arsenic, bismuth, cadmium, antimony, and zinc using inductively couple plasma-atomic absorption spectroscopy and for gold and mercury using atomic absorption spectroscopy. See table 2 for a more detailed summary of these other chemical methods used. 
Analytical results for stream-sediment, heavy-mineral-concentrate, and rock samples are listed in tables 3, 4, and 5, respectively. 

DATA STORAGE SYSTEM

Upon completion of all analytical work, the analytical results were entered into the Branch of Geochemistry's computer data base. This data base contains both descriptive geological information and analytical data. Any or all of this information may be retrieved and converted to a binary form (STATPAC) for computerized statistical analysis or publication (VanTrump and Miesch, 1977). 

DESCRIPTION OF DATA TABLES

Tables 3-5 list the results of analyses for the samples of stream sediment, heavy-mineral concentrate, and rock, respectively. For the three tables, the data are arranged so that column 1 contains the USGS-assigned sample numbers. These numbers correspond to the numbers shown on the site location map (plate 1). Columns in which the element headings show the letter "s" below the element symbol are emission spectrographic analyses; "aa" indicates atomic absorption analyses; and "icp" indicates inductively coupled plasma-atomic emission spectroscopy. A letter "N" in the tables indicates that a given element was looked for but not detected at the lower limit of determination shown for that element in table 1. For emission spectrographic analyses, a "less than" symbol (<) entered in the tables in front of the lower limit of determination indicates that an element was observed but was below the lowest reporting value. For AA and ICP analyses, a "less than" symbol (<) entered in the tables in front of the lower limit of determination indicates that an element was below the lowest reporting value. If an element was observed but was above the highest reporting value, a "greater than" symbol (>) was entered in the tables in front of the upper limit of determination. If an element was not looked for in a sample, two dashes (--) are entered in tables 3-5 in place of an analytical value. Because of the formatting used in the computer program that produced tables 3-5, some of the elements listed in these tables (Fe, Mg, Ca, Ti, Ag, and Be) carry one or more nonsignificant digits to the right of the significant digits. The analysts did not determine these elements to the accuracy suggested by the extra zeros. Au-ppm s Ga-ppm Ge-ppm s s 
3.0 3 5 2 2 3 3 2 1 2 2 1 1 1 1 2 3 3 1 2 1 2 2 2 2 1 2 2 2 1 1 1 1 .0 .
2 2 2 2 2 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1, 1 
>1.0 >1.0 >1.0 >1.0 1.0 .7 >1.0 1.0 1.0 1.0 >1.0 >1.0 >1.0 >1.0 >1.0 1.0 >1.0 >1.0 >1.0 >1.0 >1.0 >1.0 1.0 >1.0 >1.0 >1.0 .7 1.0 1.0 .3 1.0 >1.0 1.0 >1.0 >1.0 >1.0 »1.0 >1.0 .7 '1.0 1.0 1.0 Ag-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N As-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.5 <1.0 1.0 1.5 1.5 2.0 1.5 1.5 1.0 1.5 2.0 2.0 1.5 2.0 2.0 2.0 1.5 1.0 2.0 2.0 2.0 2.0 1.5 1.5 1.5 2.0 Bi-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-
. Mn-ppm s 3,000 1,000 1,000 5,000 5,000 1,500 1,000 700 1,000 5,000 2,000 1,500 1,000 5,000 1,500 1,500 1,500 2,000 700 1,000 5,000 1,500 2,000 2,000 2,000 1,000 1,000 5,000 3,000 1,500 2,000 2,000 1,000 2,000 1,500 1,000 1,500 2,000 1,000 1,000 1,500 1,000 1,500 1,500 1,500 Sn-ppm s Au-ppm aa Au-ppm s Mn-ppm s 3,000 1,000 2,000 3,000 1,500 1,500 >10,000 5,000 1,000 1,500 2,000 700 2,000 2,000 2,000 2,000 3,000 3,000 2,000 2,000 3,000 1,500 1,500 1,000 2,000 2,000 2,000 2,000 2,000 1,500 3,000 2,000 1,500 3,000 1,000 1,500 3,000 1,000 1,000 2,000 2,000 5,000 3,000 2,000 2,000 As-ppm icp .8 
. -- -- -- -- -. .. .. -- -- .. .. -- .. -- .. -- .. -- -- .. -- -- -- -- .. -- -- -- -- -. -. -- .. -- .. .- .. -- -- .. .. -- -- ..
Nb-ppm s 20 <20 <20 <20 <20 <20 N N <20 20 <20 <20 <20 30 20 <20 N 20 <20 20 20 <20 <20 <20 <20 <20 <20 20 N N 20 <20 <20 20 <20 N 20 <20 <20 <20 N <20 <20 <20 <20 Ni-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
V-ppm s W-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-
N N N <200 <200 N N N N N N N N N ^N N N N N N 500 N N N N N N 200 <200 N N N N N N N <200 N <200 N <200 N <200 N N Zr-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Hg-ppm aa N N N N N N N .
icp <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 7 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 6 <5 <5 5 7 5 5 9 <5 5 <5 <5 Bi-ppm icp <2 <2 <2 <2 3 <2 <2 <2 <2 2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3 <2 <2 <2 <2 <2 <2 <2 2 <2 <2 <2 <2 <2 <2 <2 2 <2 <2 <2 <2 <2 <2 <2 <2 Cd-
icp <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2
>1 .0 N 1.0 N 1.0 N >1 .0 N >1.0 N 1.0 N >1.0 N 1.0 N 1.0 N 2 .2 1.0 N 2 <.2 >1.0 N 3 <.2 >1.0 N 3 .2 1.0 N 5 N .5 N 3 .2 .5 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N B-
1.5 1.5 1.0 1.5 1.5 1.0 1.5 2.0 2.0 2.0 1.5 1.5 1.5 1.5 1.5 1.5 Bi-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sr-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-
H H N N N N 200 <200 <200 N N <200 N N <200 <200 N N N N N <200 N N <200 N N N N N N <200 <200 N N N N N N Zr-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <.
<5 <5 <5 <5 6 <5 <5 <5 <5 <5 <5 <5 6 7 <5 <5 5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 6 6 <5 <5 5 <5 <5 <5 <5 <5 <5 10 6 Bi-ppm icp <2 <2 <2 <2 <2 <2 3 <2 <2 <2 <2 <2 4 <2 <2 <2 3 <2 4 3 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 3 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 Cd-
Sb-ppm icp 
<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2
Zn-ppm icp Pb-ppm Pd-ppm s s 
2 2 3 3 1 2 3 4 5 5 4 4 0 0 2 2 1 1 1 1 1 1 1 0 0 1 2 1 2 4 3 3 4 4 3 2 2 1
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- .- -- -- -- -- .. -- -- -- -- .- -- -- -- -- .. -- -- -- -- P-pct.
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
N N N N N N N N N 70 50 N N N 300N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cd-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Co-ppm s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Cr-
<100 N N <100 <100 N 200 N 100 <100 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Table 4.
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 100 N N N N N N N N N N N N N N N Pt-ppm Sb-ppm s s N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Y-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N <200 <200 <200 <200 200 <200 <200 N N N N N 300 N N N
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 100 N N N 30 <20 <20 N 200 N <20 N N N 70 N Pt-ppm Sb-ppm s s N N N N N N N N N N N N N N " N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Sc-
N N N N N N N N N N N N N N N N N N 200 N N N N N N N N N N N 100 N N N N N N N N N N N N N Y-
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N Zr-ppm s >2,

Figure 1 .

 1 Figure 1. Location of the Hawk Mountain Wilderness Study Area, Harney County, Oregon................................................ Plate 1. Localities of heavy-mineral-concentrate, streamsediment, and rock samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.....................................in pocket 


Figure 1 .

 1 Figure 1. Location of the Hawk Mountain Wilderness Study Area, Barney County, Oregon. 


Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. 




  Results of analyses of heavy-mineral-concentrate samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.[N, not detected; <, detected but below the limit of determination shown; >, determined to be greater than the value shown.] 




  Results of analyses of heavy-mineral-concentrate samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. 


Ca

  




  Results of analyses of heavy-mineral-concentrate samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. 




  Results of analyses of rock samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. 




  Results of analyses of rock samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. 


Table 4 .

 4 Results of analyses of heavy-mineral-concentrate samples........ 17 



TABLESTable 1. Limits of determination for spectrographic analysis of rocks and stream sediments................................................. Table 2. Chemical methods used........................................... Table 3. Results of analyses of stream-sediment samples.................. 
Table 5 .

 5 Results of analyses of rock samples............................. 23 



Table 6 .

 6 Description of rock samples..................................... 25 INTRODUCTION In August 1986, the U.S. Geological Survey conducted a reconnaissance geochemical survey of the Hawk Mountain Wilderness Study Area, Harney County, Oregon. ? The Hawk Mountain Wilderness Study Area comprises about 109 mi^ (283 km ) in the southwest corner of Harney County, Oregon, and lies about 12 mi (19 km) northwest of Denio, Nevada, and about 32 mi (51 km) southeast of Adel, Oregon (see fig. 



TABLE 1

 1 
	. Limits of determination for the spectrographic analysis of rocks
		and stream sediments, based on a 10-mg sample
	[The spectrographic limits of determination for heavy-mineral-concentrate
	samples are based on a 5-mg sample, and are therefore two reporting
	intervals higher than the limits given for rocks and stream sediments]
	Elements	Lower determination limit	Upper determination limit
		Percent	
	Calcium (Ca)	.05	20
	Iron (Fe) 0.05	20	
	Magnesium (Mg)	.02	10
	Sodium (Na)	0.2	5
	Phosphorus (P)	0.2	10
	Titanium (Ti)	.002	1
		Parts per million	
	Silver (Ag)	0.5	5,000
	Arsenic (As)	200	10,000
	Gold (Au) 10	500	
	Boron (B) 10	2,000	
	Barium (Ba)	20	5,000
	Beryllium (Be)	1	1,000
	Bismuth (Bi)	10	1,000
	Cadmium (Cd)	20	500
	Cobalt (Co)	10	2,000
	Chromium (Cr)	10	5,000
	Copper (Cu)	5	20,000
	Gallium (Ga)	5	500
	Germanium (Ge)	10	100
	Lanthanum (La)	50	1,000
	Manganese (Mn)	10	5,000
	Molybdenum (Mo)	5	2,000
	Niobium (Nb)	20	2,000
	Nickel (Ni)	5	5,000
	Lead (Pb) 10	20,000	
	Antimony (Sb)	100	10,000
	Scandium (Sc)	5	100
	Tin (Sn) 10	1,000	
	Strontium (Sr)	100	5,000
	Thorium (Th)	100	2,000
	Vanadium (V)	10	10,000
	Tungsten (W)	20	10,000
	Yttrium (Y)	10	2,000
	Zinc (Zn) 200	10,000	
	Zirconium (Zr)	10	1,000
	Palladium (Pd)*	5	1,000
	Platinum (Pt)*	20	1,000
			Limits are for heavy-

*Determined in heavy-mineral-concentrate samples only, mineral-concentrate samples. 
Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. 


	Sample	Latitude	Longitude	Ca-pct.	Fe-pct.	Mg-pct.	Na-pct.	P-pct.
								s	s	s	s	s
	HM001CS		0	28	118	52	40	
	HM002CS		0	46	118	53	31	
	HM003CS		1	19	118	53	51	
	HM004CS		1	31	118	54	52	
	HM005CS		1	56	118	54	59	
	HM007CS		2	54	118	56	43	
	HM008CS		2	57	118	56	47	
	HM009CS		3	23	118	57	45	
	HM010CS		3	33	118	58	9	
	HM011CS		1	14	119	8	46	
	HM012CS		2	55	119	8	1	
	HM013CS		3	24	119	7	42	
	HM014CS		4	50	119	7	40	
	HM015CS		5	20	119	6	33	
	HM016CS		5	17	119	6	26	
	HM017CS		4	43	119	12	4	
	HM018CS		4	43	119	12	35	
	HM019CS		0	45	118	55	29	
	HM020CS		0	48	118	55	33	
	HM021CS		2	15	118	57	3	
	HM022CS		2	11	118	57	0	
	HM023CS		1	51	118	57	38	
	HM024CS		1	33	118	58	10	
	HM025CS		1	34	118	58	14	
	HM026CS		1	45	118	58	39	
	HM027CS		1	42	118	58	43	
	HM028CS		1	5	118	59	31	
	HM029CS		1	2	118	59	25	
	HM030CS		0	30	119	0	15	
	HM031CS		0	33	119	1	40	
	HM032CS	42	1	36	119	1	53	
	HM033CS		2	36	118	59	4	
	HM034CS		1	54	118	59	39	
	HM035CS	42	2	17	119	0	22	
	HM036CS	42	4	3	118	59	21	
	HM037CS	42	3	59	118	59	19	
	HM038CS	42	3	57	118	59	15	
	HM039CS	42	4	48	119	0	23	
	HM040CS	42	4	13	119	0	21	
	HM041CS	42	2	45	119	2	29	
	HM042CS	42	2	45	119	2	29	
	HM043CS	42	2	12	119	3	27	
	HM044CS	42	1	3	119	4	4	
	HM045CS	42	2	35	119	4	23	
	HM046SS	42	3	24	119	4	43	

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample
	HM001CS
	HM002CS
	HM003CS
	HM004CS
	HM005CS
	HM007CS
	HM008CS
	HM009CS
	HM010CS
	HM011CS
	HM012CS
	HM013CS
	HM014CS
	HM015CS
	HM016CS
	HM017CS
	HM018CS
	HM019CS
	HM020CS
	HM021CS
	HM022CS
	HM023CS
	HM024CS
	HM025CS
	HM026CS
	HM027CS
	HM028CS
	HM029CS
	HM030CS
	HM031CS
	HM032CS
	HM033CS
	HM034CS
	HM035CS
	HM036CS
	HM037CS
	HM038CS
	HM039CS
	HM040CS
	HM041CS
	HM042CS
	HM043CS
	HM044CS
	HM045CS
	HM046SS

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample
	HM001CS
	HM002CS
	HM003CS
	HM004CS
	HM005CS
	HM007CS
	HM008CS
	HM009CS
	HM010CS
	HM011CS
	HM012CS
	HM013CS
	HMOUCS
	HM015CS
	HM016CS
	HM017CS
	HM018CS
	HM019CS
	HM020CS
	HM021CS
	HM022CS
	HM023CS
	HM024CS
	HM025CS
	HM026CS
	HM027CS
	HM028CS
	HM029CS
	HM030CS
	HM031CS
	HM032CS
	HM033CS
	HM034CS
	HM035CS
	HM036CS
	HM037CS
	HM038CS
	HM039CS
	HM040CS
	HM041CS
	HM042CS
	HM043CS
	HM044CS
	HM045CS
	HM046SS

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Zn-ppm
	icp
	91
	41
	47
	87
	150
	72
	76
	52
	36
	60
	62
	75
	65
	120
	72
	82
	54
	82
	59
	64
	410
	89
	92
	87
	56
	79
	95
	220
	99
	56
	76
	79
	66
	98
	85
	77
	160
	120
	68
	72
	97
	69
	95
	69
	120

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon. Continued 


	Sample
	HM047SS
	HM048SS
	HM049SS
	HM050SS
	HM051HS
	HM052HS
	HM053HS
	HM054HS
	HM055HS
	HM056HS
	HM057HS
	HM058HS
	HM059HS
	HM060HS
	HM061HS
	HM062HS
	HM063HS
	HM064SS
	HM065SS
	HM066HS
	HM067HS
	HM068SS
	HM069HS
	HM070SS
	HM071SS
	HM072SS
	HM073SS
	HM074SS
	HM075HS
	HM076SS
	HM077SS
	HM078HS
	HM079SS
	HM080SS
	HM081SS
	HM082SS
	HM083SS
	HM084SS
	HM085SS
	HM201S
	HM202S
	HM203S
	HM204S
	HM205S
	HM206S

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample	La-ppm
		s
	HM047SS	100
	HM048SS	100
	HM049SS	100
	HM050SS	100
	HM051HS	<50
	HM052HS	50
	HM053HS	N
	HM054HS	<50
	HM055HS	100
	HM056HS	<50
	HM057HS	50
	HM058HS	<50
	HM059HS	100
	HM060HS	100
	HM061HS	50
	HM062HS	
	HM063HS	
	HM064SS	
	HM065SS	
	HM066HS	
	HM067HS	
	HM068SS	
	HM069HS	
	HM070SS	
	HM071SS	
	HM072SS	
	HM073SS	
	HM074SS	
	HM075HS	
	HM076SS	
	HM077SS	
	HM078HS	
	HM079SS	
	HM080SS	
	HM081SS	
	HM082SS	
	HM083SS	
	HM084SS	
	HM085SS	
	HM201S	
	HM202S	
	HM203S	
	HM204S	
	HM205S	
	HM206S	

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample	V-ppm	W-ppm
		s	s
	HM047SS	100	
	HM048SS	100	
	HM049SS	150	
	HM050SS	100	
	HM051HS	100	
	HM052HS	100	
	HM053HS	300	
	HM054HS	150	
	HM055HS	20	
	HM056HS	100	
	HM057HS	70	
	HM058HS	100	
	HM059HS	150	
	HM060HS	70	
	HM061HS	100	
	HM062HS	100	
	HM063HS	50	
	HM064SS	150	
	HM065SS	150	
	HM066HS	100	
	HM067HS	100	
	HM068SS	100	
	HM069HS	100	
	HM070SS	70	
	HM071SS	100	
	HM072SS	100	
	HM073SS	100	
	HM074SS	100	
	HM075HS	100	
	HM076SS	100	
	HM077SS	150	
	HM078HS	100	
	HM079SS	100	
	HM080SS	150	
	HM081SS	100	
	HM082SS	100	
	HM083SS	100	
	HM084SS	50	
	HM085SS	70	
	HM201S	100	
	HM202S	100	
	HM203S	200	
	HM204S	150	
	HM205S	150	
	HM206S	100	

Table 3 .

 3 Results of analyses of stream-sediment samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample	Latitude	Longitude	Ca-pct.	Fe-pct.	Mg-pct.	Na-pct.	P-pct.	Ti-pct.	Ag-ppm
					s "	s	s		s		s	s
	HM207S	42 3 20	119 12	10	2.0		7	1.0		3		<.2	.5
	HH208S	42 3 54	119 10	33	2.0		7	1.0		3		.2	.7
	HH209S	42 4 28	119 9	47	2.0		5	1.0		5		<.2	.7
	Sample	Au-ppm	B-ppm	Ba-ppm		Be-ppm	Bi-ppm	Cd-ppm		Co-ppm	Cr-ppm	Cu-ppm
		s	s	s		s	s	s		s		s	s
	HM207S	N	70	700		2.0	N	N		20	70	50
	HM208S	N	50	700		2.0	N	N		20		50	50
	HM209S	N	50	700		2.0	N	N		15		100	50
	Sample	La-ppm	Mo-ppm	Mn-ppm	Nb-ppm	Ni-ppm	Pb-ppm	Sb-ppm	Sc-ppm	Sn-ppm
		s	s	s		s	s	s		s		s	s
	HM207S	70	<5	2,000	<20	30	70		N	15	N
	HM208S	70	<5	3,000	<20	30	70	'	N	20	N
	HM209S	70	<5	2,000	<20	30	100		N	20	N
	Sample	V-ppm	W-ppm	Y-ppm	Zn-ppm	Zr-ppm	Au-ppm	Hg-ppm	As-ppm	Bi-ppm	Cd-ppm
		s	s	s	s		s	aa	aa		icp	icp	icp
	HH207S	150	N	50		N	200	<.002	.02		8	<2	.5
	HH208S	150	N	50		N	200	<.002	<.02		8	<2	.6
	HM209S	150	N	50		N	200	<.002	.02		7	<2	.5



  Mn-ppm Ag-ppm As-ppm Au-ppm 


	S	<5	<5	S	S
		200			
		300			
		300			
		200			
		200			
		5QO			
		300			
		200			
		200			
		200			
		200 -\5Q			
		200			
		150			
		200			
		150			
		150			
		200			
		200			
		100			
		200			
		150			
		150			
		200			
		150			
		150			
		100			
		150			
		150			
		300			
		200			
		300			
		300			
		300			
		300			
		150			
		200			
		100			
		200			
		200			
		150			
		200			
		150			
		200			
		300			

Table 4 .

 4 Results of analyses of heavy-mineral-concentrate samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample	B-ppm Ba-ppm	Be-ppm	Bi-ppm
				s	s
	HM001CC3		500	3
	HM002CC3		500	2
	HM003CC3		300	7
	HM004CC3		700	2
	HM006CC3		500	15
	HM007CC3		3,000	10
	HM008CC3		1,000	3
	HM009CC3		500	10
	HM010CC3		500	10
	HM011CC3		500	2
	HM012CC3		500	2
	HM013CC3		500	3
	HM014CC3		500	7
	HM015CC3		300	30
	HM016CC3		500	10
	HM017CC3		500	<2
	HM018CC3		500	<2
	HM019CC3		500	2
	HM020CC3		700	3
	HM021CC3		700	7
	HM022CC3		1,000	5
	HM023CC3		700	5
	HM024CC3		700	<2
	HM025CC3		700	3
	HM026CC3		500	5
	HM027CC3	30	700	5
	HM028CC3		700	<2
	HM029CC3	30	700	<2
	HM030CC3		1,000	5
	HM031CC3		500	15
	HM032CC3	20	700	10
	HM033CC3	20	300	15
	HM034CC3	20	500	10
	HM035CC3	20	200	30
	HM036CC3	20	300	20
	HM037CC3	20	700	7
	HM038CC3	20	500	2
	HM039CC3	20	700	2
	HM040CC3	20	500	15
	HM041CC3	100	300	10
	HM042CC3	30	700	<2
	HM043CC3	20	300	20
	HM044CC3	30	700	<2
	HM045CC3	30	700	15
	HM046SC3	30	1,000	3

Table 4 .

 4 Results of analyses of heavy-mineral-concentrate samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample	Latitude Longitude	Fe-pct.	Mg-pct.
				s	s
	HM047SC3 42 5 119 5 35	.7	.30
	HM048SC3 42 52 119 5 59	.5	.05
	HM049SC3 42 59 119 6 12	.5	.10
	HM050SC3 42 38 119 6 0	.3	.05
	HM051HC3 42 34	119 2 58	.7	.15
	HM052HC3 42 23	119 1 50	.5	.20
	HM053HC3 42 2	119 0 47	.5	.10
	HM054HC3 42 30	119 0 19	.5	.10
	HM056HC3 42 38	119 2 36	.3	.10
	HM057HC3 42 10	119 3 9	.5	.10
	HM058HC3 42 20	119 4 28	.7	.50
	HM059HC3 42 37	119 5 53	.2	.05
	HM060HC3 42 58	119 8 40	1.0	.20
	HM061HC3 42 35	119 6 56	.5	.10
	HM062HC3 42 53	119 8 32	.5	.10
	HM063HC3 42 26	119 9 18	2.0	.70
	HM064SC3 42 33	119 5 43	1.5	.50
	HM065SC3 42 11	119 5 40	1.0	.70
	HM066HC3* 42 57	119 7 9	7.0	5.00
	HM067HC3 42 38	119 6 2	1.0	.30
	HM068SC3* 42 28	119 8 18	10.0	5.00
	HM069HC3 42 16	119 10 11	5.0	3.00
	HM071SC3 42 23	119 13 59	2.0	3.00
	HM072SC3 42 24	119 13 37	1.5	2.00
	HM073SC3 42 57	119 9 12	2.0	2.00
	HM074SC3 42 53	119 10 11	2.0	2.00
	HM075HC3 42 51	119 10 15	2.0	1.50
	HM076SC3 42 3	119 9 30	.5	.20
	HM077SC3 42 4	119 11 31	1.0	.70
	HM078HC3 42 6	119 11 37	1.0	.50
	HM079SC3 42 28	119 11 35	1.0	.50
	HM080SC3 42 3	119 12 11	.7	.20
	HM081SC3 42 17	119 14 45	1.0	1.50
	HM082SC3 42 9	119 11 48	1.0	.70
	HM083SC3 42 48	119 11 5	2.0	2.00
	HM084SC3 42 54	119 6 4	1.0	.50
	HM085SC3 42 2	119 4 6	.7	.50
	HM203C	42 3 7	119 11 30	.2	.70
	HM204C	42 3 6	119 11 40	.2	.10
	HM205	42 46	119 11 40	5.0	1.50
	HM206	42 3 31	119 11 28	10.0	3.00
	HM207	42 3 20	119 12 10	15.0	7.00
	HM208	42 3 54	119 10 33	5.0	2.00
	HM209	42 4 28	119 9 47	10.0	5.00

Table 4 .

 4 Results of analyses of heavy-mineral-concentrate samples from the Hawk Mountain Wilderness Study Area, Harney County, Oregon.--Continued 


	Sample

Table 6 . Description of rock samples

 6 
				W-ppm
		s	s	s
		<100	20	N
		200	15	N
		<100	20	N
		<100	10	N
		100	50	N
		100	20	N
		<100	50	N
		100	10	<50
		100	200	<50
		N	<10	N
		<100	<10	N
		100	<10	<50
		<100	<10	N
		<100	10	<50
			.1	
		Cd-ppnt	Sb-ppm	Zn-ppm
		i cp	i cp	icp
	<2	.4	<2	58
	<2	.2	<2	21
	<2	<.1	<2	33
	<2	<.1	<2	67
	<2	.3	<2	67
	<2	.1	<2	58
	<2	<.1	<2	33
	<2	<.1	<2	27
	<2	.4	<2	34
	<2	.1	<2	24
	<2	.2	<2	23
	<2	<.1	<2	19
	<2	.2	<2	25
	<2	.2	<2	26

64 

ACKNOWLEDGMENTS

A number of our colleagues also participated in the collection, preparation and analyses of these samples. We would like to extend our appreciation to these colleagues Bryan Anderson, Paul Briggs, Suzi Erickson, Tracey Delaney, Dave Detra, Olga Erlich, Tommy Hopkins, Janet Jones-Peace, Al Love, Tom Peacock, Steve Smith, Cliff Taylor, and Eric Welsch. 


1,500 1,000 <20 2,000 150 <20 30 700 100 100
B M Adrian, H D King, D L Fey, P L Hageman