Admontite: Difference between revisions
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{{Short description|Borate mineral}} |
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{{Infobox mineral |
{{Infobox mineral |
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| name = Admontite |
| name = Admontite |
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| boxwidth = |
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| boxbgcolor = |
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| image = |
| image = Admontite.jpg |
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| caption = |
| caption = |
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| formula = MgB<sub>6</sub>O<sub>10</sub>·7H<sub>2</sub>O<ref name=HB/> or <br/>[[Magnesium|Mg]][[Boron|B]]<sub>6</sub>[[Oxygen|O]]<sub>7</sub>(O[[Hydrogen|H]])<sub>6</sub>·4H<sub>2</sub>O<ref name=Mindat/> |
| formula = MgB<sub>6</sub>O<sub>10</sub>·7H<sub>2</sub>O<ref name=HB/> or <br/>[[Magnesium|Mg]][[Boron|B]]<sub>6</sub>[[Oxygen|O]]<sub>7</sub>(O[[Hydrogen|H]])<sub>6</sub>·4H<sub>2</sub>O<ref name=Mindat/> |
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|IMAsymbol=Amt<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|journal=Mineralogical Magazine|volume=85|pages=291–320}}</ref> |
|IMAsymbol=Amt<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|url=https://www.cambridge.org/core/journals/mineralogical-magazine/article/imacnmnc-approved-mineral-symbols/62311F45ED37831D78603C6E6B25EE0A|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> |
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| molweight = |
| molweight = |
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| strunz = 6.FA.15 |
| strunz = 6.FA.15 |
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| luster = |
| luster = |
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| refractive = n<sub>α</sub> = 1.442 n<sub>γ</sub> = 1.504 |
| refractive = n<sub>α</sub> = 1.442 n<sub>γ</sub> = 1.504 |
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| opticalprop = Biaxial ( |
| opticalprop = Biaxial (−) |
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| birefringence = δ = 0.062 |
| birefringence = δ = 0.062 |
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| pleochroism = |
| pleochroism = |
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It is named after [[Admont]], [[Austria]]. Its [[Mohs scale of mineral hardness|Mohs scale]] rating is 2 to 3. |
It is named after [[Admont]], [[Austria]]. Its [[Mohs scale of mineral hardness|Mohs scale]] rating is 2 to 3. |
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==See also== |
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* [[List of minerals]] |
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==References== |
==References== |
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[[Category:Monoclinic minerals]] |
[[Category:Monoclinic minerals]] |
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[[Category:Minerals in space group 14]] |
[[Category:Minerals in space group 14]] |
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{{mineral-stub}} |
{{mineral-stub}} |
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Latest revision as of 19:04, 19 June 2024
| Admontite | |
|---|---|
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| General | |
| Category | Nesoborates |
| Formula (repeating unit) | MgB6O10·7H2O[1] or MgB6O7(OH)6·4H2O[2] |
| IMA symbol | Amt[3] |
| Strunz classification | 6.FA.15 |
| Dana classification | 26.6.3.1 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P21/c |
| Identification | |
| Color | colorless |
| Cleavage | Absent |
| Fracture | Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz) |
| Mohs scale hardness | 2 - 3 - Gypsum-Calcite |
| Streak | White |
| Density | 1.82 - 1.87, Average = 1.84 |
| Optical properties | Biaxial (−) |
| Refractive index | nα = 1.442 nγ = 1.504 |
| Birefringence | δ = 0.062 |
| Dispersion | None |
| References | [2][1][4] |
Admontite is a hydrated magnesium borate mineral with formula MgB6O10·7H2O.
Occurrence - In a gypsum deposit. Associations: gypsum, anhydrite, hexahydrite, löweite, eugsterite, pyrite, quartz.
It is named after Admont, Austria. Its Mohs scale rating is 2 to 3.
See also[edit]
References[edit]
Look up admontite in Wiktionary, the free dictionary.
- ^ a b Handbook of Mineralogy
- ^ a b Mindat.org
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ Webmineral data
 | This article about a specific mineral or mineraloid is a stub. You can help Wikipedia by expanding it. |