• Piemontite-(Sr): Mineral information, data and localities.

    www.mindat.org/min-3773.html Partitioning of Sr between coexisting minerals of the hollandite-and piemontite-groups in a quartz-rich schist from the Sanbagawa metamorphic belt, Japan. American Mineralogist, 86(3), 205-214. Tokyo Metropolis
  • Piemontite-(Sr) Mineral Data

    webmineral.com/data/Piemontite-(Sr).shtml Piemontite-(Sr) (Ca,Mn++)(Sr,Ca)Mn+++(Al,Mn+++,Fe+++)2(SiO4)(Si2O7)O(OH) Dana No: 58.02.01a.06 Strunz No: 09.BG.05a Locality: Notes:
  • mindat.org - Piemontite-(Sr)

    www.mindat.org/a/best_piemontitesr Piemontite-(Sr) is a mineral in the clinozoisite group of the epidote supergroup. It is a rare mineral, listed from only 11 localities in Mindat (August 2015). Like all piemontite minerals, it has a crimson color, which makes it impossible to distinguish from piemontite or epidote rich in Mn 3+ without a quantitative chemical analysis.
  • Piemontite-(Sr) Mineral Data

    webmin.mindat.org/data/Piemontite-(Sr).shtml Piemontite-(Sr) Crystallography: Axial Ratios: a:b:c =1.5596:1:1.7935 : Cell Dimensions: a = 8.862, b = 5.682, c = 10.191, Z = 2; beta = 114.7° V = 466.21 Den(Calc ...
  • Piemontite-(Sr)

    www.mindat.org/gm/3773 Piemontite-(Sr) Shiromaru mine, Okutama-cho, Nishitama district, Tokyo Metropolis, Japan Dark red bands (horizontally across the upper part of the photo) of strontiopiemontite traversing metasedimentary manganese ore.
  • Piemontite-(Sr) Mineral Specimen For Sale

    www.dakotamatrix.com/products/9065/piemontite-sr Piemontite-(Sr) - Red platy crystals on one side. Epidote group mineral. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Manganipiemontite-(Sr) Mineral Data

    webmin.mindat.org/data/Manganipiemontite-(Sr).shtml General Manganipiemontite-(Sr) Information : Chemical Formula: CaSr(Mn+++,Fe+++)2Al[Si3O12](OH) Composition: Molecular Weight = 559.08 gm Strontium 15.67 % Sr 18.53 % SrO: Calcium 7.17 % Ca 10.03 % CaO: Manganese 14.74 % Mn 21.18 % Mn 2 O 3: Aluminum 6.27 % Al 11.85 % Al 2 O 3: Iron 4.00 % Fe 5.71 % Fe 2 O 3: Silicon 15.07 % Si 32.24 % SiO 2
  • mindat.org - Piemontite

    www.mindat.org/a/best_piemontite Piemontite can also contain appreciable amounts of Strontium, sometimes more than 0.5 apfu, thus becoming piemontite-(Sr) or mangani-piemontite-(Sr). A high Sr content in piemontite has been interpreted as evidence that the mineral formed by metamorphosis of seafloor manganese nodules.
  • Piemontite Mineral Data

    webmineral.com/data/Piemontite.shtml 09.BG.05a Piemontite-(Sr)! (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 2 1 /m 2/m : 09.BG.05a Manganipiemontite-(Sr)! CaSr(Mn,Fe)2Al[Si3O12](OH) P 2 1 /m 2/m : 09.BG.05a Clinozoisite-(Sr)! CaSrAl3(Si2O7)(SiO4)O(OH) P 2 1 /m 2/m : 09.BG.05a Epidote-(Sr)! CaSrAl2Fe(Si2O7)(SiO4)O(OH) P 2 1 /m 2/m : Other Piemontite Information: See Also: Links ...
  • ALEX STREKEISEN-Piemontite-

    www.alexstrekeisen.it/english/meta/piemontite1.php • The high-P peak assemblage is exceptionally well-preserved in the levels 1, 2 and 3 (the core of the mineralisation), with omphacite (violan in level 1 and emerald-green omphacite in level 3) . The occurrence of piemontite (Sr rich) is mainly confined in these core levels.