Schorl with Goshenite - NAM 011

A group of unusually formed schorl crystals (variety foitite) with goshenite crystals.


Measurements:  51 x 37 x 35 mm

Description:  A group of unusually formed schorl crystals (variety foitite) with goshenite crystals. 

The foitite crystals are not black, but rather a very dark other colour (difficult to determine). The goshenite crystals are mostly double terminated. 

This unusual, rare specimen has very little damage, only a few nicks.

Weight of Specimen:  45 g

Chemical Composition:  NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)
                                        Be3Al2Si6O18 (goshenite)    
                                  
Hardness on Mohs Scale: 
(schorl)  7.5 
                                           (goshenite)   7.5–8

Location:  Erongo, Namibia.

Specimen Code:  NAM 011

R 350

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