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17 Cards in this Set
- Front
- Back
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Biotite (203) - ferromagnetic potassium - non metallic - low to medium in hardness - splits into thin sheets; excellent cleavage |
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Calcite (207) - nonmetallic - cleavage in 3 directions not at 90 degrees - effervesces in dilute |
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Galena (214) - cubic cleavage - metallic - low hardness - good cleavage in 3 directions-> breaks into cubes |
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Gypsum (211) - very soft - can scratch with a finger nail - nonmetallic |
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Halite (208) - table salt; tastes salty - nonmetallic - 3 right angles - cubic cleavage |
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Hematite (217 & 216) -can be either earthy (picture shown) or metallic - 1-6 on Mohs hardness scale - may be attracted to a magnet |
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K- Spar (205) - most abundant on earth - right angels (90 degrees) meeting in 2 directions meeting - nonmetallic - 6 on Mohs hardness scale |
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Kaolinite (213) - doesn't react with acid - nonmetallic - low hardness - forms blades |
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Magnetite - reacts with magnets - is either metallic or nonmetallic - 6.0-6.5 on Mohs hardness scale - no cleavage |
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Muscovite -mica - nonmetallic - soft - cleavage in one direction; can be split into flexible transparent sheets |
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Olivine (200) - ferromagnetic - nonmetallic - 7 on Mohs hardness scale - no cleavage |
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Plagioclase (206) - nonmetallic - 6 on Mohs hardness scale - striations on mineral - cleavage good in 2 directions meeting at 90 degrees |
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Pyrite (215) - "fools gold" - metallic - 6.0-6.5 on Mohs hardness scale - shiny, metallic luster - cleavage is absent to poor - forms masses or cubes |
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Pyroxene - nonmetallic - medium hardness - 2 directions of cleavage-> both right angels |
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Quartz - can have glassy luster - doesn't react with acid - scratches glass - nonmetallic - no cleavage - greasy luster |
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Sphalerite - metallic or nonmetallic - medium to low hardness - dodecahedral cleavage |
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Talc (212) -feels "soapy" - can scratch with fingernail - nonmetallic - no cleavage - luster is silky to greasy |
