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15 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
White to colorless, hardness of 3.5, non metallic
Calcite
Vigorous reaction to HCl
Harder than streak plate, hackly fracture
Garnet
Red to Brown
White to transparent, 1 direction of cleavage
Muscovite
Clear or white, white streak, 3 planes of cleavage (90 degrees)
Halite
Salty
Clear, white, or pinkish; vitreous, concoidal fracture, no cleavage
Quartz
White clear, white streak, silky, 1 direction of cleavage
Gypsum
Harder than streak plate, sugary texture
Olivine
Green
Sulfur; metallic,
Pyrite
Pink, white, tan; 2 planes of cleavage
K Feldspar
Flesh colored
White, grey; 2 planes of cleavage
Na and Ca Plagioclase
Blue iridesense on some
Black, 2 planes of cleavage (60 / 120), non-metallic
Amphibole
Grey, Green, Black, Brown; Cherry red streak; metallic, earthy
Hematite
Black; >6, 2 planes of 60 degree cleavage
Pyroxene
Silver, black; metallic grey streak; 3 planes of cleavage
Galena
Brown to Black; 1 plane of cleavage
Biotite