Rocks n Minerals

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27 Terms

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Orthoclase: Ts fleshy pink (like orthoclase the octopus). 90 degree fractures

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Quartz, Glassy like see-through or super white and shiny

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Plagioclase: 90 degree fractures, looks a lot like quartz but sharper corners

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Calcite: Looks so much like quartz its not funny, feels powdery

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Dolomite: Has pinkish-white pockets surrounded by black

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Apatite: Green, poor cleavage in one direction

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Hornblende: Black or dark green, Grains all going in 1 direction

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Olivine: Olive color, has a few black specs, sandy texture

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Hematite: Looks like graphite, fine sparkles, streaks red even though its black

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Limonite: Yellow brown, very porous 

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Pyrite: Brass yellow color, smells like my trumpet, metallic/golden luster

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Gypsum: Super low hardness (can be scratched by nail). It genuinely feels like a fake mineral, very silky smooth. Is fleshy pink OR White and black. Kinda looks like dolomite but no pink

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Limestone (caltic) Sedimentary: Caltic scratches glass and bubbles

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Limestone (Dolomite) Sedimentary: Does not scratch glass, feels dusty, doesn’t bubble

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Shale Sedimentary:   A muddy brown, thin sheets, sorta a matte shine


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Sandstone Sedimentary: Visible sand grains. Lots of small sparkles

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Conglomerate Sedimentary: Large chunks held together. A CONGLOMERATE of rocks.

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Syenite (Igneous):  ALOT of small black specs. Looks like granite but no shiny quartz.

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Granite (Igneous): Light color with larger but few black specs, shiny quartz specs.

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Rhyolite (Igneous): Pinkish brown, feels powdery, can’t streak glass, colorless streak

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Gabbro (Igneous): Black with white specs, looks like asphalt, very coarse with sharpish edges (noticeably heavy)

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Basalt (Igneous):  Predominantly Black and fine grained, sharpish edges

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Genesis (Metamorphic): Has ZEBRA black banding with cleavage along the bands, Shiny quartz specs


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Schist (Metamorphic): Very similar to genesis but SHINY specs(ho was blinding me). Also has black specs instead of banding

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Phyllite (Metamorphic):  Black and white, surprisingly shiny, nail streaks white on it


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Slate (Metamorphic): Dull black or red. Feels like clay, one uniform color

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Marble (Metamorphic): White and stained orange, looks a lot like quartz but isn't as reflective, coarse grained