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Zircon point pegmatite, Khmara Bay, Casey Bay, Napier Complex, Enderby Land, Eastern Antarctica, Antarctica

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Khmaralite : (Mg,Al,Fe)16[(Al,Si,Be)12O36]O4, Surinamite : (Mg,Fe)3Al4BeSi3O16

Zircon point pegmatite, Khmara Bay, Casey Bay, Napier Complex, Enderby Land, Eastern Antarctica, Antarctica

Almost black khmaralite grains with inclusions more bright marine-green surinamite grains. FOV ~10x8 mm. Part of holotype specimen of Edward Grew #2234L. Pavel M. Kartashov collection and photo.

Mindat.org Photo of the Day - 29th Apr 2009
 © Pavel M. KartashovPhoto ID: 72755    View Count: 660

Khmaralite : (Mg,Al,Fe)16[(Al,Si,Be)12O36]O4

Zircon point pegmatite, Khmara Bay, Casey Bay, Napier Complex, Enderby Land, Eastern Antarctica, Antarctica

Almost black khmaralite grain with visible marine-green inner reflections. FOV ~2x2 mm. Part of the holotype specimen of Edward Grew #2234L. Pavel M. Kartashov collection and photo.
 © Pavel M. KartashovPhoto ID: 72754    View Count: 268

Magnesiotaaffeite-6N’3S : (Mg,Fe,Zn)2Al6BeO12, Magnetite : Fe2+Fe3+2O4

Zircon point pegmatite, Khmara Bay, Casey Bay, Napier Complex, Enderby Land, Eastern Antarctica, Antarctica

Light-grey tabular musgravite (=magnesiotaafeite 6N'3S) crystal in pegmatite matrix with black lustrous magnetite grains. FOV is ~12x10 mm. Collected by Edward Grew. Pavel M. Kartashov collection and photo.
 © Pavel M. KartashovPhoto ID: 136626    View Count: 381

Magnesiotaaffeite-6N’3S : (Mg,Fe,Zn)2Al6BeO12

Zircon point pegmatite, Khmara Bay, Casey Bay, Napier Complex, Enderby Land, Eastern Antarctica, Antarctica

Fragment of broken light-grey large tabular musgravite (=magnesiotaafeite 6N'3S) crystal in pegmatite matrix. FOV is ~13x10.5 mm. Collected by Edward Grew. Pavel M. Kartashov collection and photo.
 © Pavel M. KartashovPhoto ID: 136629    View Count: 138

Surinamite : (Mg,Fe)3Al4BeSi3O16, Khmaralite : (Mg,Al,Fe)16[(Al,Si,Be)12O36]O4

Zircon point pegmatite, Khmara Bay, Casey Bay, Napier Complex, Enderby Land, Eastern Antarctica, Antarctica

Marine-green Surinamite grains in biotite-khmaralite matrix. FOV is ~2x1.8 mm. Part of the holotype specimen of Edward Grew #2234L. Pavel M. Kartashov collection and photo.
 © Pavel M. KartashovPhoto ID: 72756    View Count: 224
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