Amarantite is an amaranth-red to brownish mineral with the general formula of Fe3+2O(SO4)2·7H2O or Fe3+SO4(OH)·3H2O. The name comes from the Greek word αμάραντος which means amaranth, an imaginary undying red flower, in allusion to its color. Amarantite is a very rare mineral and can only be found in a couple of places such as Carocoles, Chile. Although it is a source of iron, there is not enough amarantite to be mined for iron. However, when found in crystal form its red orange color gives it value as a collectors item.
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| - Amarantite (en)
- Amarantita (ca)
- Amarantit (de)
- Amarantita (es)
- Amarantita (eu)
- Amarantite (it)
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| - La amarantita és un mineral de la classe dels sulfats. Rep el seu nom del grec αμάραντος (amarant), en al·lusió al seu color. (ca)
- Amarantit ist ein selten vorkommendes Mineral aus der Mineralklasse der „Sulfate (und Verwandte)“. Es kristallisiert im triklinen Kristallsystem mit der chemischen Zusammensetzung Fe23+[O|(SO4)2]·(3+4) H2O und ist damit chemisch gesehen ein wasserhaltiges Eisen-Sulfat mit zusätzlichen Sauerstoff-Ionen. Amarantit entwickelt meist nur kleine, prismatische Kristalle bis etwa 2 cm Länge sowie nadelige, radialstrahlige Aggregate von amaranthroter bis bräunlichroter oder orangeroter Farbe bei zitronengelber Strichfarbe. (de)
- La amarantita es un mineral de la clase de los minerales sulfatos. Fue descubierta en 1888 en la mina Caracoles de Sierra Gorda, en la región de Antofagasta (Chile), siendo nombrada así del griego amarantos, una imaginaria flor roja imperecedera, en alusión a su color, llamado también rojo-amaranto. Sinónimos poco usados son: castanita o paposita. (es)
- Amarantita mineral bat da. (eu)
- L'amarantite è un minerale. (it)
- Amarantite is an amaranth-red to brownish mineral with the general formula of Fe3+2O(SO4)2·7H2O or Fe3+SO4(OH)·3H2O. The name comes from the Greek word αμάραντος which means amaranth, an imaginary undying red flower, in allusion to its color. Amarantite is a very rare mineral and can only be found in a couple of places such as Carocoles, Chile. Although it is a source of iron, there is not enough amarantite to be mined for iron. However, when found in crystal form its red orange color gives it value as a collectors item. (en)
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| unit cell
| - a = 8.9, b = 11.56 (en)
- c = 6.64 [Å]; α = 95.55° (en)
- β = 90.52°, γ = 97.42°; Z = 2 (en)
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| - Amaranth-red to brownish red, orange-red (en)
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| - La amarantita és un mineral de la classe dels sulfats. Rep el seu nom del grec αμάραντος (amarant), en al·lusió al seu color. (ca)
- Amarantit ist ein selten vorkommendes Mineral aus der Mineralklasse der „Sulfate (und Verwandte)“. Es kristallisiert im triklinen Kristallsystem mit der chemischen Zusammensetzung Fe23+[O|(SO4)2]·(3+4) H2O und ist damit chemisch gesehen ein wasserhaltiges Eisen-Sulfat mit zusätzlichen Sauerstoff-Ionen. Amarantit entwickelt meist nur kleine, prismatische Kristalle bis etwa 2 cm Länge sowie nadelige, radialstrahlige Aggregate von amaranthroter bis bräunlichroter oder orangeroter Farbe bei zitronengelber Strichfarbe. (de)
- Amarantite is an amaranth-red to brownish mineral with the general formula of Fe3+2O(SO4)2·7H2O or Fe3+SO4(OH)·3H2O. The name comes from the Greek word αμάραντος which means amaranth, an imaginary undying red flower, in allusion to its color. Amarantite is triclinic, which means crystallographically, it has only one symmetry fold. It must be rotated 360 degrees to be exactly the same. Due to it being triclinic it falls into the biaxial optical class, the axis degrees do not equal 90 degrees and the sides of each axis are not the same length. Amarantite is anisotropic, which means, the velocity of light varies with crystallographic direction, and there is more than one refractive index. Amarantite is a very rare mineral and can only be found in a couple of places such as Carocoles, Chile. Although it is a source of iron, there is not enough amarantite to be mined for iron. However, when found in crystal form its red orange color gives it value as a collectors item. (en)
- La amarantita es un mineral de la clase de los minerales sulfatos. Fue descubierta en 1888 en la mina Caracoles de Sierra Gorda, en la región de Antofagasta (Chile), siendo nombrada así del griego amarantos, una imaginaria flor roja imperecedera, en alusión a su color, llamado también rojo-amaranto. Sinónimos poco usados son: castanita o paposita. (es)
- Amarantita mineral bat da. (eu)
- L'amarantite è un minerale. (it)
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| - Perfect on {010} and {100} (en)
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| - As radiating or matted aggregates of needles; may be columnar or bladed (en)
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| pleochroism
| - X = colorless; Y = pale yellow; Z = reddish brown (en)
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| refractive
| - nα = 1.516 nβ = 1.598 nγ = 1.621 (en)
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