Goshenite and Schorl - NER 015

Goshenite and schorl crystal group

Measurements:  27 x 22 x 17 mm 

Description:  Three straw-coloured goshenite crystals (the biggest one 13 mm long) formed around a group of schorl crystals, with bits of schorl and schorl crystals partially embedded in them. 

There is some transparency at several of the goshenite terminations, and at least one tiny schorl needle shows some transparency, the latter being unusual, and seldom seen. 

A few of the goshenite terminations have lovely patterns and multiple terminations.

Damage to the goshenite crystals appears to be limited to only a few minute nicks. 

Weight of Specimen:  5.9 g 

Chemical Composition:   Be3Al2Si6O18  (goshenite)                                                                                     NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)

Hardness on Mohs Scale:  (goshenite)   7.5–8 
                                         (schorl)  7.5                

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 015

US $ 35

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