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Willhendersonite & Kalsilite

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CLB536698

Willhendersonite & Kalsilite

Rare Mineral

Description Tabs

Description
Locality: 
Vispi Quarry, San Venanzo, Terni Province, Umbria, Italy
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.7 × 1 cm
Description

Waterclear wilhendersonire (hard to photograph) with acicular colorless kalsilite and other species, most probably fluorapatite (also acicular) and brown akermanite (but I can't see it clearly - might be just phlogopite).

Mineral Data
What's on the rock

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

Kalsilite

Formula: 
KAlSiO4
Strunz: 
9.FA.05
Hardness: 
6.0
Type Locality: 
Kamengo (Chamengo crater), Gomba District, Uganda

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