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Kusachiite

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RSL878804

Kusachiite

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Description Tabs

Description
Locality: 
Fuka Mine, Bitchu-cho, Takahashi, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.5 × 1.8 cm
Description

Kusachiite is an extremely rare binary copper(II) and bismuth(III) oxide with a chemical formula CuBi2O4. This sample belongs from the Type Locality: the well-known Fuka mine in Japan. This sample is rich in radial aggregates of kusachiite crystals, with a deep brown to black colour and contasting on the matrix. They are accompanied by calcite, quartz and other species like cahnite (SEM), bismite.
We have carried out some SEM-EDS analysis and Raman. With these spectroscopical techniques we have confirmed the presence of the species. We will send all analytical reports to the buyer.
This extremely rare mineral has never been sold in e-rocks.

Mineral Data
What's on the rock

Kusachiite

Formula: 
CuBi2O4
Strunz: 
4.JA.20
Crystal System: 
Tetragonal
Hardness: 
4.5
Colour: 
Black
Streak: 
Black
Type Locality: 
Fuka mine, Fuka, Bicchu-cho (Bitchu-cho), Takahashi City, Okayama Prefecture, Chugoku Region, Honshu Island, Japan
Analysis
Analysis Report - only: Kusachiite
Analysis Report - only: Kusachiite