Simmonsite
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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Simmonsite
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.
has abstract
La simmonsita és un mineral de ...... s de Colorado i del tipus NYF.
@ca
La simmonsite è un minerale.
@it
Simmonsita haluro motako minerala da eta cryolita subtaldearen kidea da.
@eu
Simmonsite is a halide mineral ...... w Orleans, William B. Simmons.
@en
Сімонсит (англ. simmonsite) — мінерал класу галогенідів, група кріоліту.
@uk
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997,374,858
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birefringence
δ=0.0009
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category
class
*
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Pinacoidal
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cleavage
None
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color
Cloudy white, Cream white, pale buff
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dispersion
r < v weak
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fluorescence
moderately bright orange
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formula
Na2LiAlF6
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fracture
Irregular/Uneven
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gravity
luster
Low luster waxy or low luster greasy
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mohs
name
Simmonsite
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opticalprop
biaxial
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pleochroism
Non-pleochroic
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references
''
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refractive
nα= 1.359 nβ= 1.359 nγ= 1.359
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streak
white
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symmetry
P2 or P2/m
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tenacity
Brittle
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unit cell
a = 7.536 Å, b = 11.734 Å
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c = 6.748 Å; α=91.70°
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β=93.86°, γ=104.53°; Z = 2*
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wikiPageUsesTemplate
comment
La simmonsita és un mineral de ...... s de Colorado i del tipus NYF.
@ca
La simmonsite è un minerale.
@it
Simmonsita haluro motako minerala da eta cryolita subtaldearen kidea da.
@eu
Simmonsite is a halide mineral ...... w Orleans, William B. Simmons.
@en
Сімонсит (англ. simmonsite) — мінерал класу галогенідів, група кріоліту.
@uk
label
Simmonsita
@ca
Simmonsita
@eu
Simmonsite
@en
Simmonsite
@it
Сімонсит
@uk
wasDerivedFrom
isPrimaryTopicOf
name
Simmonsite
@en