Hemusite

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Hemusite
Hemusite NNHMuseum Sofia.JPG
Hemusite from the “Kawazu Mine” near Shimoda , Japan
exhibited in the Natural History Museum Sofia , Bulgaria
General and classification
other names

IMA 1968-038

chemical formula Cu 6 SnMoS 8
Mineral class
(and possibly department) 		Sulfides and sulfosalts
System no. to Strunz
and to Dana 		2.CB.35a ( 8th edition : II / C.09)
02.09.06.01
Crystallographic Data
Crystal system cubic
Crystal class ; symbol cubic-hexakistrahedral; 4 3 m
Space group Fm 3 m , F 432 or F 4 3 m
Lattice parameters a  = 10.82  Å Please complete the source as an individual reference!
Formula units Z  = 4 Please complete the source as an individual reference!
Physical Properties
Mohs hardness 4th
Density (g / cm 3 ) 4.469
Cleavage Please complete!
colour Gray
Line color Please complete!
transparency opaque
shine metallic

Hemusite is a very rarely occurring mineral from the mineral class of sulfides and sulfosalts . It crystallizes in the cubic crystal system with the chemical composition Cu 6 SnMoS 8 and forms round grains or irregularly shaped aggregates of up to 0.05 mm in size.

Etymology and history

The mineral was first in 1971 by GI Terziev in the Chelopech mine in Panagyurishte in Pazardzhik Province ( Bulgaria found). They named it after the old name of the Balkan Mountains Hemus , in which the site is located.

classification

In the Strunz system , hemusite is a metal sulfide with a ratio of metal to sulfur, selenium or tellurium of 1: 1. After the 8th edition, it forms a group together with Kiddcreekit . In the 9th edition , it forms a subgroup of sulfides with zinc , iron , copper or silver with catamarcaite , vinciennite , kiddcreekite, morozeviczite , polkovicit and renierite .

In the Dana systematics , it forms with Kiddcreekit a subgroup of sulfides, selenides and tellurides with a general ratio formula A m B n X p and a ratio of (m + n) to p of 1: 1.

Education and Locations

Hemusite forms hydrothermally . It is associated with enargite , luzonite , colusite , stannoidite , renierite , tennantite , chalcopyrite and pyrite .

Only five sites are known of the very rare mineral (as of October 2010). In addition to the type locality , hemusite was found in Shimoda and Iriki in Japan , the Kamchatka Peninsula in Russia and Kochbulak in Uzbekistan .

Crystal structure

Hemusite crystallizes in the cubic crystal system in the space group Fm 3 m , F 432 or F 4 3 m with the lattice parameter a = 10.82  Å and four formula units per unit cell .

See also

Individual evidence

  1. ^ New Dana Classification of Sulfides

literature

  • Hemusit in: Anthony et al .: Handbook of Mineralogy , 1990, 1, 101 ( PDF ).
  • GI Terziev: Hemusite-a complex copper-tin-molybdenum sulfide from the Chelopech ore deposit, Bulgaria. In: American Mineralogist. 1971, 56, pp. 1847–1854 ( full text ; PDF; 474 kB).

Web links