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Argentite sample The unit cell of argentite. In mineralogy, argentite (from Latin argentum ' silver') is cubic silver sulfide (Ag 2 S), which can only exist at temperatures above 173 °C (343 °F), [1] 177 °C (351 °F), [2] or 179 °C (354 °F). [3] When it cools to ordinary temperatures it turns into its monoclinic polymorph, acanthite.
The westernmost point is located at the Los Glaciares National Park, at the Santa Cruz Province. [4] The easternmost point is the "Hito V" (CONALI), located at Bernardo de Irigoyen, Misiones. [4] The highest point of Argentina is the Aconcagua mountain at the Mendoza Province, with 6962 m., which is also the highest point of South America. [1]
Argentite, silver sulfide of the orthorhombic system, one of the oldest silver ore minerals. In addition, there are several more mixed minerals, part of the name of which is also silver glance: Antimony-silver glance (German: Antimonsilberglanz) — Stephanite; Black silver glance (German: Schwarzsilberglanz) — Stephanite
Argentite is the stable form above that temperature. As argentite cools below that temperature its cubic form is distorted to the monoclinic form of acanthite. Below 173 °C acanthite forms directly. [3] [6] Acanthite is the only stable form in normal air temperature.
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A man planning a camping trip using Google Maps ran across a uniquely curved spherical pit in Quebec. It may be an ancient asteroid impact crater. ... 31 are located in Canada. Quebec itself has ...
Argentina, [C] officially the Argentine Republic, [A] [D] is a country in the southern half of South America.Argentina covers an area of 2,780,400 km 2 (1,073,500 sq mi), [B] making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world.
Patagonia (Spanish pronunciation: [pataˈɣonja]) is a geographical region that includes parts of Argentina and Chile at the southern end of South America.The region includes the southern section of the Andes mountain chain with lakes, fjords, temperate rainforests, and glaciers in the west and deserts, tablelands, and steppes to the east.