Search results
Results from the WOW.Com Content Network
Tsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca 3 Al 2 Si 3 O 12. [2] Trace amounts of vanadium or chromium provide the green color.
In past studies, garnet is found to be a mineral that is stable under a wide range of P-T conditions, meanwhile chemically displays responses (e.g. ions exchange) to the P-T variations throughout its metamorphic history without reaching complete equilibrium. [22] The non-equilibriated garnet formed previously are often zoned by younger garnet. [1]
The garnet biotite thermometer correlates temperature with the partitioning of Fe and Mg in coinciding garnet and biotite. [1] The garnet-biotite thermometer has been "calibrated" many times since the 1970s by both experimental and empirical methods, however Ferry and Spear's 1978 experimental calibration study [ 2 ] is reported thoroughly and ...
Eclogite piece from Norway with a garnet (red) and omphacite (greyish-green) groundmass. The sky-blue crystals are kyanite. Minor white quartz is present, presumably from the recrystallization of coesite. A few gold-white phengite patches can be seen at the top. A 23 millimetres (0.91 in) coin added for scale.
Uvarovite is a chromium-bearing garnet group species with the formula: Ca 3 Cr 2 (Si O 4) 3. It was discovered in 1832 by Germain Henri Hess who named it after Count Sergei Uvarov (1765–1855), a Russian statesman and amateur mineral collector. [2] It is classified in the ugrandite group alongside the other calcium-bearing garnets andradite ...
Spessartine forms a solid solution series with the garnet species almandine. [4] [5] Well-formed crystals from this series, varying in color from very dark-red to bright yellow-orange, were found in Latinka, Rhodope Mountains, Kardzhali Province, Bulgaria. [12] Spessartine, like the other garnets, always occurs as a blend with other species.
Terbium gallium garnet (TGG) is a kind of synthetic garnet, with the chemical composition Tb 3 Ga 5 O 12. [1] This is a Faraday rotator material with excellent transparency properties and is very resistant to laser damage.
Pyrope garnet in eclogite - Shibino, Ural Mountains, Russia. The mineral pyrope is a member of the garnet group. Pyrope is the only member of the garnet family to always display red colouration in natural samples, and it is from this characteristic that it gets its name: from the Greek words for fire and eye.