Hessite
Encyclopedia
Hessite is a mineral
form of disilver telluride
(Ag2Te). It is a soft, dark grey telluride mineral
which forms monoclinic crystals.
It is named after Germain Henri Hess
(1802–1850).
Hessite is found in the USA in Eagle County, Colorado
and in Calaveras County, California
and in many other locations.
Stützite
(Ag7Te4) and empressite
(AgTe) are related silver telluride minerals.
Mineral
A mineral is a naturally occurring solid chemical substance formed through biogeochemical processes, having characteristic chemical composition, highly ordered atomic structure, and specific physical properties. By comparison, a rock is an aggregate of minerals and/or mineraloids and does not...
form of disilver telluride
Silver telluride
Silver telluride is a chemical compound, a telluride of silver, also known as disilver telluride or silver telluride. It forms a monoclinic crystal...
(Ag2Te). It is a soft, dark grey 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...
which forms monoclinic crystals.
It is named after Germain Henri Hess
Germain Henri Hess
Germain Henri Hess was a Swiss-born Russian chemist and doctor who formulated Hess's Law, an early principle of thermochemistry.-Early days:...
(1802–1850).
Hessite is found in the USA in Eagle County, Colorado
Eagle County, Colorado
Eagle County is the thirteenth most populous of the 64 counties of the State of Colorado in the United States. The county is named for the Eagle River. The county population was 41,659 at U.S. Census 2000. The county seat is the Town of Eagle...
and in Calaveras County, California
Calaveras County, California
Calaveras County is a county located in the Gold Country of the U.S. state of California. Calaveras is the Spanish word for skulls; the county was reportedly named for the remains of Native Americans discovered by the Spanish explorer Captain Gabriel Moraga. As of the 2010 census, the county had a...
and in many other locations.
Stützite
Stützite
Stützite or stuetzite is a silver telluride mineral with formula: Ag5−xTe3 or Ag7Te4.It was first described in 1951 from a museum specimen from Sacarimb, Romania. It was named for Austrian mineralogist Xavier Stütz ....
(Ag7Te4) and empressite
Empressite
Empressite is a mineral form of silver telluride, AgTe.It is a rare, grey, orthorhombic mineral with which can form compact masses, rarely as bipyrimidal crystals....
(AgTe) are related silver telluride minerals.