bi·o·tite

(bī′ə-tīt′)

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.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

biotite

(ˈbaɪəˌtaɪt)

(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

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

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

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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.

Arcwest Exploration Inc. Provides Exploration Update on its Eagle and Sparrowhawk Porphyry Projects, Central B.C. and Stakes Newly Discovered Porphyry Copper Prospect

In the complex microprophries is very fine grained with orthoclase, perthite, quartz, biotite, magnetite, epidote as major minerals.

Evaluating the effect of grain size on mechanical parameters of rocks from different areas of Khyber Pakhtunkhwa, Pakistan

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).

Lucky Minerals Defines Mineralized Porphyry System on its Fortuna 3 Concession Project in Ecuador

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.

U.S. Gold expands Copper King mineralized zone

Biotite extracted from various depths yielded an age of 1600 to 3130 Ma, plagioclase -920 to 2100 Ma, microcline and amphibole 460-1960 Ma.

COMPARISON OF PETROPHYSICAL PROPERTIES OF PREDOMINANT ROCKS FROM THE ARCHAEAN SECTION OF THE KOLA SUPERDEEP (SG-3)

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.

Classification, Character, and Origin of Textural Zoning in Porphyroblasts: Significance and Relation to Strain

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.

Dietary maifanite supplementation did not affect the apparent total tract digestibility of calcium and phosphorus in growing pigs