WebBasalt is a dark-colored, igneous rock composed of higher elements such as magnesium, calcium, silicon, iron, and aluminum. Basalt is mafic rock as mafic is used in geology to … WebIf the rock is fine-grained (i.e., mineral grains are too small to be seen with the naked eye) you can approximate the composition based on the rock's color index. Felsic fine-grained rocks tend to be pink, white, or pale brown. Intermediate fine-grained rocks tend to …
Is Basalt Felsic or Mafic? (Answered) - Yes Dirt
Web7 rows · Aug 1, 2024 · Chemical Composition. Mafic. Color. Black. Mineral Composition. Calcium Plagioclase, Pyroxene, ... WebApr 6, 2024 · Olivine, pyroxene, amphibole, and biotite are common rock-forming minerals of mafic. Common examples of mafic rocks are basalt, gabbro, diabase, etc. They are dark in colour ( whereas felsic rocks are light in colour). Chemically, these rocks are consist of magnesium, iron, and calcium. Mafic magma has a low content of silica because of which … pole barn near grafton wv
Colour index - Oxford Reference
WebGranite also contains some dark minerals, but they are in the minority. Secondly, granite is usually light pink, white or gray in color. If we compare these chemical and physical properties of granite with felsic and mafic, we can say with confidence that granite is felsic, has a light color, and is rich in silica. WebDec 31, 2024 · Basalt rock is made up of many minerals that typically make it mafic, or dark black in color. It can also be found in hues of greens, reds, and oranges depending on the metal composition. WebType Igneous Rock Texture Porphyritic Origin Extrusive/Volcanic Chemical Composition Mafic Color Dark Gray to Black Mineral Composition Calcium Plagioclase, Pyroxene Miscellaneous Calcium Plagioclase phenocrysts in an aphanitic (Fine-grained) groundmass Tectonic Environment Divergent Boundary or Intra-oceanic hot spots pole canyon ranch texas