basalt vs granite biotite mica uses

The Minerals of Igneous Rocks - Chemeketa Community College

Biotite and amphibole do occur together in igneous rocks, but the association is not all that common. Amphibole is very commom in diorite, less so in granite or gabbro. It also is a common and diagnostic phenocryst in andesite.

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ROCK STAR Quartz, Calcite,Copper,Galena,Pyrite Feldspar, Mica ...

Practice identifying rocks and minerals for the science olympiad! Learn with flashcards, games, and more — for free.

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Granite - Wikipedia

A granite containing both muscovite and biotite micas is called a binary or two-mica granite. Two-mica granites are typically high in potassium and low in plagioclase, and are usually S-type granites or A-type granites.

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Biotite - Wikipedia

Biotite is a common phyllosilicate mineral within the mica group, with the approximate chemical formula K(Mg,Fe) 3 AlSi 3 O 10 (F,OH) 2.More generally, it refers to the dark mica series, primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite.

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Biotite | Minerals Education Coalition

Biotite is mica of little commercial value. Other micas with less commercial value include zinnwaldite, a lithium/iron–based mica that is gray to brown; and roscoelite, a vanadium/potassium/magnesium mica that can be green or brown.

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Granite vs Basalt -

Granite vs Basalt Characteristics. Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Granite vs Basalt characteristics assist us to distinguish and recognize rocks.

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Basalt vs Granite - Compare Nature

When we have to compare Basalt vs Granite, the texture, color and appearance plays an important role in determining the type of rock. Basalt is available in black, brown, light to dark grey colors whereas, Granite is available in black, grey, orange, pink, white colors.

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Biotite Mineral | Uses and Properties

Biotite is a name used for a large group of black mica minerals that are commonly found in igneous and metamorphic rocks. These include annite, phlogopite, siderophyllite, fluorophlogopite, fluorannite, eastonite, and many others.

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Rock Hardness References

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Diorite: Igneous Rock - Pictures, Definition & More

Diorite is the name used for a group of coarse-grained igneous rocks with a composition between that of granite and basalt. It usually occurs as large intrusions, dikes, and sills within continental crust.

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