Lautite is a rare

mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. (2 ...

belonging to the class of sulfides and sulfosalts with the general formula CuAsS. It is orthorhombic and is known to form up to 2.3 cm long prismatic or flat crystals. It is also found as grains or masses. First identified by Friedrich August Frenzel in 1880 in the Rudolphschacht mine near

Lauta Lauta ( Sorbian: ''Łuty'') is a town in the district of Bautzen, in Saxony, Germany. It is situated 10 km west of Hoyerswerda, and 10 km southeast of Senftenberg. History From 1815 to 1945, within the Prussian Province of Brandenbur ...

in Saxony, it was named after its type locality.Frenzel, A. (1880). XIX. Mineralogisches. Zeitschrift für Kristallographie, Mineralogie und Petrographie, 3(6), 504-516. Lautite is formed in veins under

hydrothermal Hydrothermal circulation in its most general sense is the circulation of hot water (Ancient Greek ὕδωρ, ''water'',Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon. revised and augmented throughout by Sir Henry Stuart Jones. with th ...

conditions at medium temperatures. Depending on the locality it is found accompanied by

arsenic Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, ...

tennantite Tennantite is a copper arsenic sulfosalt mineral with an ideal formula . Due to variable substitution of the copper by iron and zinc the formula is . It is gray-black, steel-gray, iron-gray or black in color. A closely related mineral, tetrahedri ...

proustite Proustite is a sulfosalt mineral consisting of silver sulfarsenide, Ag3 As S3, known also as light red silver or ruby silver ore, and an important source of the metal. It is closely allied to the corresponding sulfantimonide, pyrargyrite, from whi ...

chalcopyrite Chalcopyrite ( ) is a copper iron sulfide mineral and the most abundant copper ore mineral. It has the chemical formula CuFeS2 and crystallizes in the tetragonal system. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mo ...

galenite Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. Galena is one of the most abundant and widely distributed sulfide minerals. It cryst ...

, and baryte (in the type locality); by kutinaite and paxite (in Nieder-Beerbach); or by arsenic,

bismuth Bismuth is a chemical element with the symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic and antimony. Elemental bismuth occurs ...

, tennantite, loellingite,

rammelsbergite Rammelsbergite is a nickel arsenide mineral with formula NiAs2. It forms metallic silvery to tin white to reddish orthorhombic prismatic crystals, and is usually massive in form. It has a Mohs hardness of 5.5 and a specific gravity of 7.1. It was ...

, proustite, and

quartz Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical ...

(in

Sainte-Marie-aux-Mines Sainte-Marie-aux-Mines (; ; Alsatian: ''Màrkìrisch'') is a commune in the Haut-Rhin department and Grand Est region of north-eastern France. Geography Sainte-Marie-aux-Mines is located in the massif of the Vosges Mountains, where it occupie ...

). Aside from the type locality, the mineral is found in other places in the Ore Mountains, in Sankt Andreasberg in the

Harz The Harz () is a highland area in northern Germany. It has the highest elevations for that region, and its rugged terrain extends across parts of Lower Saxony, Saxony-Anhalt, and Thuringia. The name ''Harz'' derives from the Middle High German ...

mountains, Nieder-Beerbach in the Odenwald,

Hausach Hausach (; gsw, label= Low Alemannic, Huusä) is a town in the Ortenaukreis, in western Baden-Württemberg, Germany. History Hausach was founded in the 13th century, below Husen Castle. In the 14th century, it became a possession of the Coun ...

Schenkenzell Schenkenzell is a village in the district of Rottweil, in Baden-Württemberg, Germany. The town is twinned with Schenkon Schenkon is a municipality in the district of Sursee in the canton of Lucerne in Switzerland. Geography Schenkon has an ...

, and

Titisee-Neustadt Titisee-Neustadt () is a municipality in the district of Breisgau-Hochschwarzwald in Baden-Württemberg in southern Germany. It is made up of the six communities of Neustadt, Langenordnach, Rudenberg, Titisee, Schwärzenbach and Waldau. The town ...

in the

Black Forest The Black Forest (german: Schwarzwald ) is a large forested mountain range in the state of Baden-Württemberg in southwest Germany, bounded by the Rhine Valley to the west and south and close to the borders with France and Switzerland. It is t ...

, Flatschach in

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

Isérables Isérables is a municipality in the district of Martigny in the canton of Valais in Switzerland. History Isérables is first mentioned in 1227 as ''Aserablos''. In 1324 it was mentioned as ''Yserablo''. Geography Isérables has an area, , of ...

in Switzerland, Cochrane in

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

, Luqu and Zoigê in China,

Sirohi Sirohi is a city, located in Sirohi district in southern Rajasthan state in western India. It is the administrative headquarters of Sirohi District and was formerly the capital of the princely state of Sirohi ruled by Deora Chauhan Rajput rul ...

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

Takab Takab or Tekab ( fa, تكاب, az, تیکان‌تپه, ) is a city and capital of Takab County, West Azerbaijan Province, Iran. At the 2006 census, its population was 43,702, in 10,078 families. The famous historical complex Takht-e Soleyman ...

Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

Kombat Kombat (''the place of the giraffe'') is a mine and its associated settlement at the southern margin of the Otavi Mountain Range in northern Namibia. It is situated East of Otavi on the B8 to Grootfontein. Kombat at its peak had over 1,000 i ...

Namibia Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...

and

Coconino County Coconino County is a county in the north-central part of the U.S. state of Arizona. Its population was 145,101 at the 2020 census. The county seat is Flagstaff. The county takes its name from ''Cohonino'', a name applied to the Havasupai p ...

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

, US.

References

Minerals Copper minerals Arsenic minerals Orthorhombic minerals Minerals in space group 33 {{sulfide-mineral-stub