Mineral Name Possible Colors Streak Hardness Cleavage HEFT Luster Other Light, (how many Properties Medium, planes) Metallic or Heavy Fracture Halite Clear, white None 2.5 Cleaves at right Light Transparent Tastes salty angles Hematite Black, grey, Reddish-brown 5.5-6.5 Fracture Heavy or rusty reddish-brown Magnetite Grey-black Black 6 Non cleavage, Heavy magnetic but octahedral parting Muscovite Clear, white, Colorless, light 2-2.5 Cleaves in 1 Light Glassy to pearly Flat flexible light brown brown plane crystals Pyrite Golden-brassy, Greenish black 6-6.5 Fracture Medium Metallic yellow Quartz Clear, white, None 7 No cleavage, Light Vitreous purple, rose, but conchoidal (glassy) grey fracture Satin Spar White, Grey White 2 Fracture Light Silky Gypsum Selenite Colorless White 2 Cleaves into 1 Light Transparent Gypsum plane Talc White, green White 1 Cleaves Light Pearly-greasy Powdery-greasy feel
Mineral Name Possible Colors Streak Hardness Cleavage (how many planes) or Fracture HEFT Light, Medium, Heavy Luster Other Properties Halite Clear, white None 2.5 Cleaves at right angles Light Transparent Tastes salty Hematite Black, grey, reddish-brown Reddish-brown 5.5-6.5 Fracture Heavy or rusty Magnetite Grey-black Black 6 Non cleavage, but octahedral parting Heavy Metallic magnetic Muscovite Clear, white, light brown Colorless, light brown 2-2.5 Cleaves in 1 plane Light Glassy to pearly Flat flexible crystals Pyrite Golden-brassy, yellow Greenish black 6-6.5 Fracture Medium Metallic Quartz Clear, white, purple, rose, grey None 7 No cleavage, but conchoidal fracture Light Vitreous (glassy) Satin Spar Gypsum White, Grey White 2 Fracture Light Silky Selenite Gypsum Colorless White 2 Cleaves into 1 plane Light Transparent Talc White, green White 1 Cleaves Light Pearly-greasy Powdery-greasy feel