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Götzenite Gismondine Willhendersonite

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ZLT857250

Götzenite Gismondine Willhendersonite

Description Tabs

Description
Locality: 
Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
0.5 × 1.3 × 1 cm
Description

Part of a fissure in basaltic matrix showing yellow laths of götzenite, pyramidal crystals of gismondine and spheres of tiny willhendersonite.

Thereare also cryszals of nepheline, needles of fluorapatite and green pyroxene.

Mineral Data
What's on the rock

Götzenite

Formula: 
Na2Ca5Ti(Si2O7)2F4
Strunz: 
9.BE.22
Crystal System: 
Triclinic
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Mt Shaheru, Mt Nyiragongo, Goma, Kivu, Democratic Republic of Congo (Zaïre)

Gismondine

Synonym Of: 

Gismondine-Ca

Formula: 
CaAl2Si2O8·4H2O
Strunz: 
9.GC.05
Hardness: 
0.0
Group Parent: 
Zeolite Group

Willhendersonite

Formula: 
KCa[Al3Si3O12]·5H2O
Strunz: 
9.GD.10
Hardness: 
3.0
Streak: 
White
Type Locality: 
Vispi Quarry (incl. Celli; Pian di Celle), San Venanzo, Terni Province, Umbria, Italy

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