Grossular Garnet series Ougrandite.
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Size: 3.1 x 2.3cm
Provenance: Balochistan Pakistan
Very gem, beautiful color, perfect faces, very high shine.
Some very interesting clarifications thanks to Mr. Adrien Sautier: It is in all likelihood a grossular pole. First of all, the base of gray-green crystals reminds me of clinochlore, which would indicate an environment rich in calcium rather than aluminum, therefore pyralspite series excluded. If it is also a rodingitic fissure, the grossular is practically guaranteed. Another subtle clue: the faces of the trapezohedron seem not only modified by the dodecahedron (classical), but also by the hexoctahedron {321}. However, in almost all cases, these forms were observed on the ougrandite series.
Credit tableau: Pabst, A. 1943. Large and small garnets from Wrangell, Alaska. American Mineralogist, 28, 233-245
Dimensions without the acrylic base, which is supplied with the mineralogical specimen.
The sample is not glued to its base (flexible mastic).
Current owner
Unknown Owner
Previous owners
| Date | Collector | Acquisition price |
|---|---|---|
| — | Barras Gautier Minéraux | Not disclosed |
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