biotite


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Related to biotite: biotite schist

bi·o·tite

 (bī′ə-tīt′)
n.
A dark-brown or dark-green to black mica, K(Mg,Fe)3(Al,Fe)Si3O10(OH)2, found in igneous and metamorphic rocks.

[After Jean Baptiste Biot (1774-1862), French physicist.]

bi′o·tit′ic (-tĭt′ĭk) adj.

biotite

(ˈbaɪəˌtaɪt)
n
(Minerals) a black or dark green mineral of the mica group, found in igneous and metamorphic rocks. Composition: hydrous magnesium iron potassium aluminium silicate. Formula: K(Mg,Fe)3(Al,Fe)Si3O10(OH)2. Crystal structure: monoclinic
biotitic adj

bi•o•tite

(ˈbaɪ əˌtaɪt)

n.
a mica occurring in black, dark brown, or dark green sheets and flakes: an important constituent of igneous and metamorphic rocks.
[1860–65; after J. B. Biot (1774–1862), French mineralogist; see -ite 1]
bi`o•tit′ic (-ˈtɪt ɪk) adj.

bi·o·tite

(bī′ə-tīt′)
A dark-brown to black mica found in igneous and metamorphic rocks.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.biotite - dark brown to black mica found in igneous and metamorphic rock
lepidomelane - a mica that is a biotite containing iron
isinglass, mica - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
References in periodicals archive ?
Noranda drill holes EA-91-09 and EA-91-10 intercepted broad intervals of strong magnetite flooding with K-feldspar and biotite which indicate the Nighthawk zone is set within an area of intense potassic alteration.
In the complex microprophries is very fine grained with orthoclase, perthite, quartz, biotite, magnetite, epidote as major minerals.
the total quantity of old stored biotite reserves is estimated at 25,000 tn, the removal of which will be the natural object of the present.
The granodiorite is of white-green colour containing 30% white quartz crystals, 45% potassic feldspar and 25% biotite. Both rocks exhibit strong hydrothermal alteration and mineralization (Pyrite, Chalcopyrite and Molybdenite).
These new thick zones of mineralization occur within a quartz, biotite schist within a zone of about 200 meters long, east-west dimension, and at least 120 meters wide, north-south, and to depths similar to the historic modeled deposit.
Biotite extracted from various depths yielded an age of 1600 to 3130 Ma, plagioclase -920 to 2100 Ma, microcline and amphibole 460-1960 Ma.
Large metamorphic minerals (e.g., porphyroblasts such as biotite, garnet, andalusite and staurolite) that contain passive inclusions are extraordinarily important because they are utilized in assessing the tectonic, metamorphic, and structural history of the mid- to deep-crustal levels of orogenic belts.
Chen et al [9] reported significant improvements in the digestibility of Ca and P as a result of either 1% or 2% Biotite V (aluminosilicate clay) supplementation.
The basement consists of Jurassic and Cretaceous biotite granites and granite porphyry which are covered by Miocene volcanic and Holocene and Late Pleistocene fluviodeltaic sediments (Figure 2) [28].
In addition to the altitudes of the various peaks, passes, and camps initially provided by the 1921 survey, this chromolithograph map, published in the Geographical Journal in October 1925, displays the three key geological 'units' which Odell identified, namely the Lower Calcareous series, Gneissose Biotite series, and Upper Calcareous series, as well as two faults of the mountain's northeast-trending ridge.
We notice that in the above mentioned reports the potassium extraction (~75%) is not ideally high and there exist impurities in analcime (microcline and biotite) caused by the incomplete decomposition of microcline and indissolubility of biotite in alkaline aqueous, which will hinder the practical industrial application.
Whereas phosphatic rocks are feedstock for both conventional and unconventional phosphate fertilizers, potassium silicates, such as feldspars, biotite, phlogopite, and muscovite, and rocks with feldspathoids, such as leucite, nepheline and clayrich sediments, especially illite, are the basis for alternative potassium fertilization (Straaten, 2010).