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2. Water miscible oil paint - Wikipedia

   en.wikipedia.org/wiki/Water_miscible_oil_paint

   Water miscible oil paint. Water-miscible oil paint (also called water-soluble oil paint or water-mixable oil paint) is oil paint either engineered or to which an emulsifier has been added, allowing it to be thinned and cleaned up with water. [1] [2] These paints make it possible to avoid using, or at least reduce volatile organic compounds such ...

3. Ultramafic rock - Wikipedia

   en.wikipedia.org/wiki/Ultramafic_rock

   Peridotite, a type of ultramafic rock. Ultramafic rocks (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content).

4. Color index (geology) - Wikipedia

   en.wikipedia.org/wiki/Color_index_(geology)

   Gneiss, displaying characteristic darker (melanocratic) and lighter (leucocratic) bands. Color index, as a geological term, is a measure of the ratio between generally dark mafic minerals and generally light felsic minerals in an igneous rock. [1][2] The color index of an igneous rock is the volume percentage of mafic minerals in the rock ...

5. Anorthosite - Wikipedia

   en.wikipedia.org/wiki/Anorthosite

   Anorthosite (/ əˈnɔːrθəsaɪt /) is a phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90–100%), with a minimal mafic component (0–10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present. Anorthosites are of enormous geologic interest, because it is ...

6. Mafic - Wikipedia

   en.wikipedia.org/wiki/Mafic

   A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks include basalt, diabase and gabbro. Mafic rocks often also contain calcium -rich varieties of plagioclase ...

7. Serpentinite - Wikipedia

   en.wikipedia.org/wiki/Serpentinite

   Closeup view about 30 cm × 20 cm (12 in × 8 in). Serpentinite is a metamorphic rock composed predominantly of one or more serpentine group minerals formed by near to complete serpentinization of mafic to ultramafic rocks. Its name originated from the similarity of the texture of the rock to that of the skin of a snake. [1]