MINERAL GROUPS CHAP 5 SECTION 4. MINERAL GROUPS SILICATES – MAKE UP OVER 90 % OF ALL 4000 MINERALS...
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Transcript of MINERAL GROUPS CHAP 5 SECTION 4. MINERAL GROUPS SILICATES – MAKE UP OVER 90 % OF ALL 4000 MINERALS...
![Page 1: MINERAL GROUPS CHAP 5 SECTION 4. MINERAL GROUPS SILICATES – MAKE UP OVER 90 % OF ALL 4000 MINERALS CARBONATES SULFIDES OXIDES SULFATES HALIDES NATIVE.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f385503460f94c55378/html5/thumbnails/1.jpg)
MINERAL GROUPS
CHAP 5 SECTION 4
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MINERAL GROUPS
SILICATES – MAKE UP OVER 90 % OF ALL 4000 MINERALS
CARBONATES SULFIDES OXIDES SULFATES HALIDES NATIVE MINERALS
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SILICATES
SILICA TETRAHEDRON
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SILICATES
QUARTZ – SiO2 2ND MOST ABUNDANT MINERAL, HARDEST COMMON MINERAL (7)
FELDSPARS – MOST COMMON MINERAL FAMILY – 3 THINGS IN COMMON - HARDNESS 6, CLEAVAGE IN TWO PLANES AND PEARLY LUSTER
ORTHOCLASE – POTASSIUM / PINK PLAGIOCLASE – SODIUM / CALCIUM VARIES IN
COLOR
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QUARTZ
ORTHOCLASE
PLAGIOCLASE
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SILICATES
MICAS – EXCELLENT CLEAVAGE IN ONE PLANE
BIOTITE – DARK COLORED MUSCOVITE – LIGHT COLORED
TALC – SOFTEST MINERAL (1), SOAPY TEXTURE
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TALC
BIOTITE
MUSCOVITE
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FERROMAGNESIAN SILICATES
CONTAIN IRON AND MAGNESIUM AND ARE ALWAYS DARK IN COLOR
PYROXENE FAMILY – AUGITE AMPHIBOLE FAMILY – HORNEBLEND
OLIVINE AND KAOLINITE
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FERROMAGNESIAN SILICATES
AUGITE HORNEBLENDE
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OTHER SILICATES
OLIVINE KAOLINITE
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CARBONATES
CALCITE – CaCO3 MOST COMMON CARBONATE, REACTS TO ACID TEST
ICELANDIC SPAR – DOUBLE REFRACTION
DOLOMITE
MALACHITE AND AZURITE – COPPER CARBONATES
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CARBONATES
CALCITE DOLOMITE
AZURITEMALACHITE
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OXIDES AND SULFIDES
HEMATITE – FE2O3 MAJOR IRON ORE
MAGNATITE – FE3O4 MAGNETIC OR A MAGNET
PYRITE – FeS2 MOST COMMON SULFUR MINERAL “FOOLS GOLD”
GALENA – LEAD SULFIDE
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OXIDES AND SULFIDES
HEMATITE MAGNETITE
PYRITE GALENA