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nesosilicates |
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grossular |
Ca3Al2Si3O12 |
1) marble |
calcite, dolomite, quartz, tremolite, diopside,
wollastonite |
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andradite |
Ca3Fe3+2Si3O12 |
1) marble, 2) accessory mineral in igneous rocks |
hedenbergite, magnetite |
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spessartine |
Mn3Al2Si3O12 |
1) Mn-rich skarns, 2) low-grade metamorphic rocks,
3) granitic rocks and rhyolites |
quartz, feldspars, micas |
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sorosilicates |
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vesuvianite |
hydrous Ca, Al, Fe, Mg sorosilicate |
1) contact aureoles associated with limestones and
dolomites, 2) altered mafic rocks |
garnet, wollastonite, epidote, diopside,
carbonates |
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inosilicates |
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rhodonite |
MnSiO3 |
1) manganese deposits and some iron formations |
Zn-bearing minerals; rhodochrosite, bustamite,
pyrolusite, zincite, willemite, calcite, quartz |
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wollastonite (wall'-uh-stuh-night) |
CaSiO3 |
1) in (especially contact) metamorphosed
calcareous rocks and marble |
calcite, dolomite, tremolite, epidote, garnet,
diopside, vesuvianite; anti-association: quartz |