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Willhendersonite Gismondine-Ca & Motukoreaite

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CSL220910

Willhendersonite Gismondine-Ca & Motukoreaite

Rare Mineral

Description Tabs

Description
Locality: 
Stradner Kogel, Wilhelmsdorf, Südoststeiermark District, Styria, Austria
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.3 × 1.5 cm
Description

Very rare zeolite mineral willhendersonite occurs as stalactitic aggregates of tiny platy crystals with colorless pseudo-octahedrons of gismondine-Ca and white balls of motukoreaite, on basalt matrix.

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

Gismondine-Ca

Formula: 
CaAl2Si2O8·4H2O
Strunz: 
9.GC.05
Hardness: 
0.0
Loranth Minerals

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