ankerite


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Related to ankerite: clinochlore, siderite

an·ker·ite

 (ăng′kə-rīt′)
n.
A white, gray, or red iron-rich dolomitic or carbonate mineral, Ca(Fe,Mg,Mn)(CO3)2.

[After Matthias Joseph Anker (1771-1843), Austrian mineralogist.]
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.

ankerite

(ˈæŋkəˌraɪt)
n
(Minerals) a greyish to brown mineral that resembles dolomite and consists of a carbonate of calcium, magnesium, and iron. Formula: (Ca,Mg,Fe)CO3
[C19: named after M. J. Anker (died 1843), Austrian mineralogist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

an•ker•ite

(ˈæŋ kəˌraɪt)

n.
a carbonate mineral related to dolomite but with iron replacing part of the magnesium.
[1835–45; after M. J. Anker (d. 1843), Austrian mineralogist; see -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
This one-meter interval is a mafic schist containing coarse 2 cm size cubic pyrite in a chocolate coloured presumed ankerite alteration zone that includes a 0.4 meter rubble interval with pyrite.
In some dolomitized zones, the dolomite rhombs are brownish red colored and might be implying the presence of Ankerite (Fig.
The TG curve was relatively smooth, and the pyrolysis of carbonates, including calcite, dolomite and abundant ankerite, chiefly occurred at temperatures higher than 630 [degrees]C.
It can be seen from the figure that the kaolin clay is predominated with kaolinite mineral peaks along with a peak pertaining to calcite and ankerite. Dissolution of peaks pertaining to calcite and ankerite can be seen from acid contaminated kaolin clays.
Quartz, ankerite, and anorthose are the main rock-forming minerals of the sandstone.
Deep burial diagenetic processes led to the precipitation of different cement phases, including ankerite and anhydrite cements, which represent several percentages of the total bulk rock volume, occasionally reaching up to 17% [54, 58, 59].
Upon closing, McEwen Mining owns 100% interest in the Buffalo Ankerite, Fuller and Davidson Tisdale properties, and a 61% interest in the Paymaster property, with the remaining 39% of mineral rights held by Goldcorp Inc.
Ankerite (ferroan dolomite) grains and detrital muscovite flakes 2-5 mm long occur throughout the formation; weathering of the former produces a characteristic pale orange weathering rind.
Caption: Figure 2: X-ray diffraction of the raw coal gangue and coal gangue after acid leach and typical chemical formula of the mineral components: quartz (Si[O.sub.2]), illite (K[Al.sub.2][(Al,Si)[Si.sub.3][O.sub.10]]), kaolinite ([Al.sub.2][Si.sub.2][O.sub.5][(OH).sub.4] ), ankerite (CaMg[(C[O.sub.3]).sub.2]), mullite (Al6Si2O13), and siderite (FeC[O.sub.3]).
All seven samples of dark brown and black rock surface deposits were identified as whewellite, with minor amounts of ankerite, (Ca,Mg,Fe)C[O.sub.3], calcite, and in one case, jarosite, K[Fe.sub.3][(S[O.sub.4]).sub.2][(OH).sub.6] and pyrite Fe[S.sub.2].