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Amethyst Var Japan Law

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PDM800207

Amethyst Var Japan Law

Description Tabs

Description
Locality: 
Andilamena, Toamasina Province, Madagascar
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 3.3 × 1.2 cm
Description

This is an interesting specimen where many crystallographic characteristics can be observed. First it is obvious that the two lustrous quartz crystals have amethyst cores and are associated by a Japan Law twin. Further, they are clearly “reverse scepters” in which the crystal at the top is smaller than the underlying crystal. Then the first generation crystal are covered by small crystals at the surface, that are of similar habit and are oriented parallel to the scepter, giving the crystals an stepped aspect.

Acquired in 1998.

Mineral Data
What's on the rock

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple

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