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Tourmaline

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MGR656836

Tourmaline

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Description
Locality: 
Cruzeiro Mine, Doce Valley, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 5.8 × 2.5 cm
Description

Look at this assemble – it looks like a „L“. The horizontal crystal at the base is a dark red Rubellite, the vertical group expose different colors: it shows dark green color at the base, then a blue area in the middle and finally sharp terminated red caps. The crystals are all very glossy and sharp terminated, the vertical ones show modified pyramidal end-points. A part of the faces show a second generation of micro-crystals. I photographed this group under daylight(2nd and 3rd photo in the gallery)and one time (1st photo in the gallery) with moderately backlight.  Still photos are understatement and don´t do justice to the piece.
The vertical group is undamaged, the horizontal group shows a repair. The repair was done very well and is nearly visible and it is not really necessary – without the repair the horizontal part of the „L“-shape would be a little bit shorter. Anyway - a really spectacular assemble, amazing diversity of colors and very uncommon with these red caps.

Mineral Data
What's on the rock

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

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Start 09 Jun 18:00
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