Galena (Twins)
Posted by: Maia Sinkins on 08.28.2020 | Filed under:

Galena (Twins)

 

Specimen # 200243
Mineral: Galena, Quartz
Location: Gjudurska Mine, Madan District, Bulgaria
Size: 5.7 x 4.7 x 2.7 cm

 

Specimen # 100697
Mineral: Galena (Twins)
Location: Dal'negorsk, Primorskiy Kray, Russia
Size: 11.5 x 8.8 x 4.7 cm

Description

Mounds of quartz crystals host two absolutely exquisite galena crystals, twinned on the spinel law. The larger one is a stunner, sitting in the centre and measuring 2.1 cm. These are textbook twins, so perfect they would look completely machined if not for the fine crystallization texture – lustrous and sharp, they are just super! A third, smaller, galena twin is perched on the left-hand side of the piece, and there are also single (not twinned) cuboctahedal galena crystals. Between the two featured twins, platy calcite crystals are coated by a second generation of sharp flattened calcite crystals. With magnification, one can see small blackish-silver needle-like crystals, both as inclusions in the calcite and elsewhere on the piece – tough to identify the mineral without proper analysis but most likely one of the sulfosalts (several are found at Dal’negorsk).

This specimen is in excellent condition – there is no damage, other than a couple of incomplete galenas at the periphery. The featured crystals are pristine.

A beautiful Dal’negorsk cabinet piece.


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