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The mineral was mentioned in 1529 by G. Agricola, but the name argentite was not used till 1845 and is due to W. Haidinger. Old names for the species are Glaserz, silver-glance and vitreous silver. A related copper-rich mineral occurring e.g. in Jalpa, Zacatecas, Mexico, is known as jalpaite. [4]
Pyrolusite is a mineral consisting essentially of manganese dioxide (Mn O 2) and is important as an ore of manganese. [7] It is a black, amorphous appearing mineral, often with a granular, fibrous, or columnar structure, sometimes forming reniform crusts. It has a metallic luster, a black or bluish-black streak, and readily soils the fingers.
Silver glance (German: Silberglanz) — is a trivial name used among collectors and mineral traders, as well as miners, geologists and representatives of related craft professions for at least two ore minerals, silver sulfides. [1]: 312 It may refer to: Acanthite, monoclinic silver sulfide, one of the most famous silver ore minerals.
Silica pseudomorph after gypsum crystals and silicified serpulid polychaete tubes Pseudomorph of goethite after pyrite. In mineralogy, a pseudomorph is a mineral or mineral compound that appears in an atypical form (crystal system), resulting from a substitution process in which the appearance and dimensions remain constant, but the original mineral is replaced by another due to alteration, or ...
Acanthite is a common silver mineral in moderately low-temperature hydrothermal veins and in zones of supergene enrichment. It occurs in association with native silver, pyrargyrite , proustite , polybasite , stephanite , aguilarite , galena , chalcopyrite , sphalerite , calcite and quartz .
Stephanite is a silver antimony sulfosalt mineral with formula: Ag 5 Sb S 4. It is composed of 68.8% silver , and sometimes is of importance as an ore of this metal. [ 5 ]
The Gargoti Museum is a museum in the town Sinnar near Nashik in Indian state of Maharashtra that houses a collection of natural mineral and gem specimens collected by K. C. Pandey over 40 years. The word "goti" refers to a Marathi word meaning stone or pebble. [1] This is India's first and only gem, mineral, and fossil museum.
Oregon Sunstone is unique in that crystals can be quite large. The copper leads to variant color within some stones, where turning one stone will result in manifold hues: the more copper within the stone, the darker the complexion. [9] On August 4, 1987, the Oregon State Legislature designated Oregon Sunstone as its state gemstone by joint ...