Simmonsite is a halide mineral, being a tertiary light metal fluoride, with formula Na2LiAlF6. It was first discovered in nature in Mineral County in the Gillis Range of Nevada, U.S.A. The mineral is found intergrown with cryolite, cryolithionite and trace elpasolite. The mineral has a monoclinic structure of P2 or P2/m. The ideal chemical formula for simmonsite is Na2LiAlF6. The mineral has a no visible cleavage, Mohs hardness of 2.53, a pale white color with a white streak and feels somewhat greasy. Simmonsite was named for the Professor of Mineralogy and Petrology at the University of New Orleans, William B. Simmons.
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rdfs:label
| - Simmonsita (ca)
- Simmonsita (eu)
- Simmonsite (it)
- Simmonsite (en)
- Сімонсит (uk)
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rdfs:comment
| - La simmonsita és un mineral de la classe dels halurs que pertany al subgrup de la criolita. Nomenada el 1999 per Eugene Edward Foord, Joseph T. O'Connor, John M. Hughes, Stephen J. Sutley, Alexander O. Falster, Arthur E. Soregaroli, Frederick E. Lichte, i Daniel E. Kile en honor de William B. "Skip" Simmons (nascut al 5 de novembre de 1943), Universitat de Nova Orleans, Nova Orleans, Louisiana, EUA, especialista en mineralogia i petrologia de pegmatites granítiques, especialment les de Colorado i del tipus NYF. (ca)
- Simmonsita haluro motako minerala da eta cryolita subtaldearen kidea da. (eu)
- Simmonsite is a halide mineral, being a tertiary light metal fluoride, with formula Na2LiAlF6. It was first discovered in nature in Mineral County in the Gillis Range of Nevada, U.S.A. The mineral is found intergrown with cryolite, cryolithionite and trace elpasolite. The mineral has a monoclinic structure of P2 or P2/m. The ideal chemical formula for simmonsite is Na2LiAlF6. The mineral has a no visible cleavage, Mohs hardness of 2.53, a pale white color with a white streak and feels somewhat greasy. Simmonsite was named for the Professor of Mineralogy and Petrology at the University of New Orleans, William B. Simmons. (en)
- La simmonsite è un minerale. (it)
- Сімонсит (англ. simmonsite) — мінерал класу галогенідів, група кріоліту. (uk)
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streak
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strunz
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tenacity
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unit cell
| - a = 7.536 Å, b = 11.734 Å (en)
- c = 6.748 Å; α=91.70° (en)
- β=93.86°, γ=104.53°; Z = 2* (en)
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color
| - Cloudy white, Cream white, pale buff (en)
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| - La simmonsita és un mineral de la classe dels halurs que pertany al subgrup de la criolita. Nomenada el 1999 per Eugene Edward Foord, Joseph T. O'Connor, John M. Hughes, Stephen J. Sutley, Alexander O. Falster, Arthur E. Soregaroli, Frederick E. Lichte, i Daniel E. Kile en honor de William B. "Skip" Simmons (nascut al 5 de novembre de 1943), Universitat de Nova Orleans, Nova Orleans, Louisiana, EUA, especialista en mineralogia i petrologia de pegmatites granítiques, especialment les de Colorado i del tipus NYF. (ca)
- Simmonsita haluro motako minerala da eta cryolita subtaldearen kidea da. (eu)
- Simmonsite is a halide mineral, being a tertiary light metal fluoride, with formula Na2LiAlF6. It was first discovered in nature in Mineral County in the Gillis Range of Nevada, U.S.A. The mineral is found intergrown with cryolite, cryolithionite and trace elpasolite. The mineral has a monoclinic structure of P2 or P2/m. The ideal chemical formula for simmonsite is Na2LiAlF6. The mineral has a no visible cleavage, Mohs hardness of 2.53, a pale white color with a white streak and feels somewhat greasy. Simmonsite was named for the Professor of Mineralogy and Petrology at the University of New Orleans, William B. Simmons. (en)
- La simmonsite è un minerale. (it)
- Сімонсит (англ. simmonsite) — мінерал класу галогенідів, група кріоліту. (uk)
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birefringence
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cleavage
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dispersion
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fluorescence
| - moderately bright orange (en)
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formula
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fracture
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luster
| - Low luster waxy or low luster greasy (en)
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pleochroism
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refractive
| - nα= 1.359 nβ= 1.359 nγ= 1.359 (en)
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