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Rossmanite

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MNR172307

Rossmanite

ex. Marek Patus collection
Type Locality

Description Tabs

Description
Locality: 
Rožná Hradisko, Rožná Pegmatite, Žďár nad Sázavou, Vysočina Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.2 × 3.3 cm
Largest Crystal: 
0.70cm
Description

Rare tourmaline Rossmanite from it's type locality. Crystals are well developed and fresh (not that common for locality). Rossmanites are nice light pink color frozen in polylithionite/quartz matrix. Comes out of my own collection.

Mineral Data
What's on the rock

Rossmanite

Formula: 
☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White.
Type Locality: 
Rožná pegmatite (Rozna; Roschna), Žďár nad Sázavou, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic