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Henmilite coated by Calcite and on Olshanskyite
Henmilite coated by Calcite and on Olshanskyite. Front / Photo: Joaquim Callén
Front / Photo: Joaquim Callén
Henmilite coated by Calcite and on Olshanskyite. Rear / Photo: Joaquim Callén
Rear / Photo: Joaquim Callén
Henmilite coated by Calcite and on Olshanskyite. Photo: Joaquim Callén
Photo: Joaquim Callén

Fluorescent light (daylight)
 

TMM69AP8: Crystals of Henmilite, a rare hydrated borate of Ca and Cu, on an Olshanskyite matrix. They are very sharp and are very intense blue in color despite being partially covered by a thin layer of a mixture of minerals, among which Calcite predominates and among which there is also a currently unidentifiable copper silicate, and it can not be ruled out that it could be a new mineral phase.
The analyses carried out attest to this mixture of species in the coating. We will send a copy of the analysis to the buyer.
The specimen is from the type locality for the species.
Fuka Mine, Fuka, Bicchu-cho (Bitchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island  Japan

Specimen size: 6.1 × 3.6 × 1.2 cm = 2.40” × 1.42” × 0.47”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

Type locality

With analysis copy





  
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