or ping, thick transparent plates or GYPSUM fibrous, softer than fingernail (H=2) Colorless, green, purple, yellow. or FLUORITE brown, glassy, 4 good cleavage directions, harder than penny (H=4) fibrous or granular masses, softer GYPSUM than fingernail (H=2) Gray, pink, or white, greasy or soapy TALC feel, softer than fingernail (H=1) Bright yellow, waxy luster, odor, same SULFUR hardness as finger nail (or slightly harder) (H=1.5-2.5)
or ping, thick transparent plates or fibrous, softer than fingernail (H=2) GYPSUM Colorless, green, purple, yellow. or brown, glassy, 4 good cleavage directions, harder than penny (H=4) FLUORITE fibrous or granular masses, softer than fingernail (H=2) GYPSUM Gray, pink, or white, greasy or soapy feel, softer than fingernail (H=1) TALC Bright yellow, waxy luster, odor, same hardness as finger nail (or slightly harder) (H=1.5-2.5) SULFUR
classification%20key.docx