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Cleavelandite With Rutile

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BSM124370

Cleavelandite With Rutile

ex Philadelphia Academy of Natural Sciences #3758
With Antique Label

Description Tabs

Description
Locality: 
St Gotthard Massif, Ticino, Switzerland
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4.5 × 4.7 cm
Description

A gneiss matrix supports a layer of micro quartz crystals and snow white to glassy cleavelandite crystals.  Careful examination with a microscope reveals pale golden rutile needles and mats both exposed and included within the quartz and cleavelandite.  There are also haematite inclusions with the rutile.  The specimen probably dates from around 1850.

Mineral Data
What's on the rock

Cleavelandite

Variety Of: 

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Hardness: 
6.0 - 6.5
Hardness: 
0.0

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal - Ditetragonal Dipyramidal
Hardness: 
6.0 - 6.5
Type Locality: 
Rutile locality, Horcajuelo de la Sierra, Madrid, Spain

Seller Information

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