HomeMineralsBlogVirtual galleryAbout RMContactUser
Language
0
You are in > Home > Minerals
RM3625   Titanite, scapolite, calcite and diopside
CaTi(SiO₄)O
  -  9. Silicates

The titanite crystals from this Malagasy locality are largely unknown to collectors. They are a group of very good-sized crystals with defined faces and a brownish color, set within a matrix of calcite, scapolite, and diopside. A very interesting specimen, both for its location and for the unusual size and shape of the titanite. It was identified as coming from Fort Dauphin. The Amboasary district is famous for its numerous deposits of thorianite and phlogopite.

Size: 7.4 x 5.2 x 3.6 cm.
Main crystal: 4 x 3.5 cm.
Ex. F. Coune & Z. Gabelica (Belgique)
190 €
RM1825   Thorianite

From a classic locality for the species is coming this thorianite cube, with pointed faces of the octahedron, intense black color and brightness. The thorianite is a thorium oxide, almost always with some uranium content, the uranothorianite variety. This specimen contains about 5-6% by weight of uranium. We will send the analysis to the buyer.

Size: 4 x 4 x 3 mm.
Found in 1998.
Presents radioactive activity.
Sold