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Fresnoite & Barytolamprophyllite

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SHS755815

Fresnoite & Barytolamprophyllite

Description Tabs

Description
Locality: 
Löhley, Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 0.8 cm
Description

Fresnoite crystals marked red arrow and barytolamprophyllite crystals marked with yellow arrow on matrix

Mineral Data
What's on the rock

Fresnoite

Formula: 
Ba2Ti(Si2O7)O
Strunz: 
9.BE.15
Hardness: 
3.0 - 4.0
Type Locality: 
Esquire No. 7 claim, Big Creek, Rush Creek deposit, Big Creek-Rush Creek District, Fresno Co., California, USA

Barytolamprophyllite

Formula: 
(Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F)
Strunz: 
9.BE.25
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...