help……………….?
Many mineral samples are composed of
1) plastic 2) rocks 3) ice 4) crystals
How common are most minerals?
1) A single mineral makes up most of the rocks we find at Earth’s crust 2) Less than a dozen minerals make up most of the rocks at Earth’s surface. 3) Most rocks contain hundreds of different readily observable minerals. 4) Each different kind of rock is made of minerals found only in that rock
If you observe a wide variety of samples of quartz, which property is likely to change the most, from sample to sample, because of minor impurities?
1)luster 2)hardness 3)color 4)density
Which mineral always reflects nearly all the light that strikes a freshly broken surface?
1)pyrite 2)quartz 3)biotite mica 4)muscovite mica
Which property of quartz is always the same from sample to sample?
1)volume 2)density 3)mass 4)color
crystals
4
color
quartz
density
Gothic Art Nouveau – Matt Hughes – Quick Draw 3
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BRIGHT CLEAR! 210g Scheelite Crystals on Muscovite,Rock $199.99 |
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GREEN FUSCHITE Muscovite Rough Rocks – 5 Lb Lot – FREE SHIPPING – Mica $31.99 |
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Natural Rough Rock Mineral Muscovite Mica $1.99 |
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2209g Scheelite Crystal on Albite Muscovite,Rock $160.00 |
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Amazing! 272g Scheelite Crystals on Muscovite,Rock $100.00 |
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Tumbling Rock Rough – Green FUSCHITE – 3 LB Lot – CHROME MICA MUSCOVITE $14.99 |
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FUSHITE – GREEN MUSCOVITE – Rough Rock Gem Mineral -1LB $5.25 |