Elpasolite (original) (raw)
A valid IMA mineral species - grandfathered
About ElpasoliteHide
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Lustre:
Sub-Vitreous, Greasy
This page provides mineralogical data about Elpasolite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1369:3
2d80a79f-97c5-4dc2-bcc5-14a7f9d3f879
IMA Classification of ElpasoliteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of ElpasoliteHide
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3.CB.15
3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
11.6.2.1
11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
8.6.7
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Elp | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of ElpasoliteHide
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Transparency:
Transparent, Translucent
Fracture:
Irregular/Uneven
Density:
2.995 g/cm3 (Measured) 3.015 g/cm3 (Calculated)
Chemistry of ElpasoliteHide
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Crystallography of ElpasoliteHide
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Class (H-M):
m_3(2/m_3) - Diploidal
Cell Parameters:
a = 8.12 Å
Unit Cell V:
535.39 ų (Calculated from Unit Cell)
Morphology:
Indistinct crystals at times with indistinct octahedral and cubic faces. Massive. Artificial crystals are cubo-octahedral.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0017967 | Elpasolite | Menzer G (1932) Ueber die Kristallstrukturen der Kryolithgruppe _cod_database_code 1011068 Fortschritte der Mineralogie 17 61-61 | 1932 | 0 | 293 | ||
| 0014819 | Elpasolite | Sabelli C (1987) Structure refinement of elpasolite from Cetine mine, Tuscany, Italy Neues Jahrbuch fur Mineralogie, Monatshefte 1987 481-487 | 1987 | Cetine mine, Tuscany, Italy | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.863 Å | (100) |
| 2.024 Å | (100) |
| 2.336 Å | (80) |
| 1.428 Å | (60) |
| 0.795 Å | (60) |
| 0.905 Å | (50) |
| 1.650 Å | (40) |
Comments:
Pikes Peak, Colorado, USA. Data from Frondel (1948).
Geological EnvironmentHide
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Type Occurrence of ElpasoliteHide
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General Appearance of Type Material:
Compact irregular masses, colorless but not perfectly clear, with sparing traces of crystalline form. Rare small rounded crystal-like projections.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, numbers 162621, 83302.
Geological Setting of Type Material:
Lining solution cavities in pachnolite in a cryolite-bearing pegmatite.
Associated Minerals at Type Locality:
Other Language Names for ElpasoliteHide
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Relationship of Elpasolite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Fluorescence of ElpasoliteHide
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May fluoresce in SW medium blue with a violet tinge.
Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for ElpasoliteHide
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References for ElpasoliteHide
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Reference List:
Localities for ElpasoliteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.