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Strontium-bearing Piemontite

A variety of Piemontite
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Formula:
{(Ca,Sr)2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
A strontian variety of Piemontite.


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Unique IdentifiersHide

Mindat ID:
9290 (as Strontium-bearing Piemontite)
3208 (as Piemontite)
Long-form identifier:
mindat:1:1:9290:2 (as Strontium-bearing Piemontite)
mindat:1:1:3208:3 (as Piemontite)

Chemistry of Strontium-bearing PiemontiteHide

Mindat Formula:
{(Ca,Sr)2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Element Weights:
Element% weight
O43.124 %
Si17.469 %
Ca16.619 %
Mn11.391 %
Al11.188 %
H0.209 %

Calculated from ideal end-member formula.
Elements listed:
Al, Ca, H, Mn, O, Si, Sr - search for minerals with similar chemistry

Synonyms of Strontium-bearing PiemontiteHide

Common AssociatesHide

Associations Based on Photo Data:
3 photos of Strontium-bearing Piemontite associated with TitaniteCaTi(SiO4)O
3 photos of Strontium-bearing Piemontite associated with QuartzSiO2
1 photo of Strontium-bearing Piemontite associated with MicroclineK(AlSi3O8)
1 photo of Strontium-bearing Piemontite associated with Tweddillite(CaSr)(Mn3+AlMn3+)O[Si2O7][SiO4](OH)
1 photo of Strontium-bearing Piemontite associated with BrauniteMn2+Mn3+6(SiO4)O8
1 photo of Strontium-bearing Piemontite associated with CryptomelaneK(Mn4+7Mn3+)O16
1 photo of Strontium-bearing Piemontite associated with AegirineNaFe3+Si2O6
1 photo of Strontium-bearing Piemontite associated with 'Alurgite'K(Al,Mn3+)2(AlSi3O10)(OH)2

Other InformationHide

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 Strontium-bearing PiemontiteHide

References for Strontium-bearing PiemontiteHide

Reference List:

Localities for Strontium-bearing PiemontiteHide

Showing 2 localities.

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.
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Locality ListHide

- 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.
Italy
 
  • Aosta Valley
    • Saint-Marcel
      • Servette-Chuc mining complex
Frank K. Mazdab collection (see https://www.rockptx.com/fkm-151-to-fkm-175/#FKM-171 for analytical data) +1 other reference
Switzerland
 
  • Grisons
    • Albula Region
      • Surses
        • Tinizong (Tinzen)
Stalder et al. (1998)
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