Corundum

Results: 54



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11Mineral Commodity Summaries 2015

Mineral Commodity Summaries 2015

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Source URL: minerals.usgs.gov

Language: English - Date: 2015-02-02 15:05:07
12Nice Emerald Cut Chrysoberyl 8.18cts. For such a hard and durable material chrysoberyl is relatively obscure and the low prices don’t seem to reflect its utility as a gemstone. Only corundum and diamond are harder. Gra

Nice Emerald Cut Chrysoberyl 8.18cts. For such a hard and durable material chrysoberyl is relatively obscure and the low prices don’t seem to reflect its utility as a gemstone. Only corundum and diamond are harder. Gra

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Source URL: www.alexandrite.net

Language: English
13Outstanding 11x8mm Chrysoberyl Pear 3.43cts Chrysoberyl is extremely hard and durable, only corundum and diamond are harder. Grade Score[removed]Color Good[removed]Cut Good[removed]Carat Medium[removed]Clarity Very good[removed]R

Outstanding 11x8mm Chrysoberyl Pear 3.43cts Chrysoberyl is extremely hard and durable, only corundum and diamond are harder. Grade Score[removed]Color Good[removed]Cut Good[removed]Carat Medium[removed]Clarity Very good[removed]R

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Source URL: www.alexandrite.net

Language: English
14EDS Scan: Corundum, NMNH[removed]Corundum, NMNH[removed]Al2O3:  99.99

EDS Scan: Corundum, NMNH[removed]Corundum, NMNH[removed]Al2O3: 99.99

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Source URL: mineralsciences.si.edu

- Date: 2014-09-17 15:58:42
    15

    PDF Document

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    Source URL: www.arch.dcr.state.nc.us

    Language: English - Date: 2007-08-09 10:46:35
    16Name:  __________________________

    Name: __________________________

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    Source URL: www.ncnr.nist.gov

    Language: English - Date: 2009-09-15 15:46:49
    17Example Using the Clausius-Clapeyron Equation Dexter Perkins Consider the reaction between grossular, corundum, anorthite and gehlenite: Gr + Co = An + Ge Boettcher[removed]determined that this reaction takes place betwee

    Example Using the Clausius-Clapeyron Equation Dexter Perkins Consider the reaction between grossular, corundum, anorthite and gehlenite: Gr + Co = An + Ge Boettcher[removed]determined that this reaction takes place betwee

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    Source URL: d32ogoqmya1dw8.cloudfront.net

    Language: English - Date: 2013-11-21 13:24:38
    18Light-Colored Nonmetallic Minerals Hard Minerals Cleavage excellent or good

    Light-Colored Nonmetallic Minerals Hard Minerals Cleavage excellent or good

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    Source URL: www.arch.dcr.state.nc.us

    Language: English - Date: 2007-08-09 10:46:34
    1960  GARNET (INDUSTRIAL)1 (Data in metric tons of garnet unless otherwise noted) Domestic Production and Use: Garnet for industrial use was mined in 2010 by four firms—one in Idaho, one in Montana, and two in New York.

    60 GARNET (INDUSTRIAL)1 (Data in metric tons of garnet unless otherwise noted) Domestic Production and Use: Garnet for industrial use was mined in 2010 by four firms—one in Idaho, one in Montana, and two in New York.

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    Source URL: minerals.usgs.gov

    Language: English - Date: 2011-01-24 15:13:55
    2060  GARNET (INDUSTRIAL)1 (Data in metric tons of garnet unless otherwise noted) Domestic Production and Use: Garnet for industrial use was mined in 2013 by four firms—one in Idaho, one in Montana, and two in New York.

    60 GARNET (INDUSTRIAL)1 (Data in metric tons of garnet unless otherwise noted) Domestic Production and Use: Garnet for industrial use was mined in 2013 by four firms—one in Idaho, one in Montana, and two in New York.

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    Source URL: minerals.usgs.gov

    Language: English - Date: 2014-03-07 15:09:47