কালো মাইকা করার গাঢ় বাদামী আগ্নেয় এবং রূপান্তরিত শিলা পাওয়া

biotite's Usage Examples:

also be named after a characteristic component such as garnet gneiss, biotite gneiss, albite gneiss, and so forth.

somewhat equigranular matrix of feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende) peppering the lighter color minerals.

Phlogopite is the magnesium endmember of the biotite solid solution series, with the chemical formula KMg3AlSi3O10(F,OH)2.

rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite.

plagioclase ± epidote, garnet, cummingtonite, diopside, biotite In metapelites: muscovite + biotite + quartz + plagioclase ± garnet, staurolite, kyanite/sillimanite.

include porphyritic biotite granite, non-porphyritic garnet-bearing biotite granites and smaller occurrences of granite without biotite.

Trondhjemite is an orthoclase-deficient variety of tonalite with minor biotite as the only mafic mineral, named after Norway's third largest city, Trondheim.

Less common minerals can include biotite, garnet, actinolite, epidote, chalcedony, prehnite, and wodginite.

proportion of ferromagnesian silicates, such as amphibole, pyroxene, and biotite.

igneous rocks which have primary mineralogy consisting of amphibole or biotite, and with feldspar in the groundmass.

Monzogranites are biotite granite rocks that are considered to be the final fractionation product of magma.

Clays, sedimentary slates and shales yield biotite hornfels in which the most conspicuous mineral is biotite mica, the small scales of which are transparent.

former consists of orthoclase, nepheline, sodalite, diopside and aegirine, biotite and sphene.

Other minerals common in minor amounts include sodium-rich pyroxene, biotite, titanite, iron oxides, apatite, fluorite, melanite garnet, and zircon.

principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and/or pyroxene.

microcline, and spodumene in granite pegmatites; with andalusite and biotite in schist; and with molybdenite and cassiterite in massive hydrothermal.

biotite's Meaning':

dark brown to black mica found in igneous and metamorphic rock