Weissite
Encyclopedia
Weissite is a telluride mineral
Telluride mineral
A telluride mineral is a mineral that has the telluride anion as a main component.Tellurides are similar to sulfides and are grouped with them in both the Dana and Strunz mineral classification systems.Examples include:* calaverite* hessite* rickardite...

 consisting of copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

 telluride
Telluride (chemistry)
The telluride ion is Te2−. It is the final stable member of the series of dianions O2−, S2−, and Se2− ....

 (Cu2-xTe). Weissite has hexagonal crystal structure
Crystal structure
In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice exhibiting long-range order and symmetry...

. Its specific gravity
Specific gravity
Specific gravity is the ratio of the density of a substance to the density of a reference substance. Apparent specific gravity is the ratio of the weight of a volume of the substance to the weight of an equal volume of the reference substance. The reference substance is nearly always water for...

 is 6 and its Mohs hardness is 3. Occurrence is in Gunnison County, Colorado
Gunnison County, Colorado
Gunnison County is the fifth most extensive of the 64 counties of the state of Colorado in the United States. The county population was 15,324 at the 2010 census. The county was named for John W. Gunnison, a United States Army officer and captain in the Army Topographical Engineers, who surveyed...

, Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

 and New Mexico
New Mexico
New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

 in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is also reported from Kalgoorlie, Western Australia
Western Australia
Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

 and Dalarna and Värmland, Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

.
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