Potassic-ferro-ferri-sadanagaite

A valid IMA mineral species

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Potassic-ferro-ferri-sadanagaite

Ilmen Nature Reserve, Chelyabinsk Oblast, Russia

Potassic-ferro-ferri-sadanagaite

Ilmen Nature Reserve, Chelyabinsk Oblast, Russia

Potassic-ferro-ferri-sadanagaite

Ilmen Nature Reserve, Chelyabinsk Oblast, Russia

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About Potassic-ferro-ferri-sadanagaiteHide

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Formula:

{K}{Ca₂}{Fe²⁺₃Fe³⁺₂}(Al₃Si₅O₂₂)(OH)₂

The sadanagaite group minerals are defined as with 0.5 < A(Na+K+ 2Ca) where Na or K is dominant, and with 1.5 < C(Al+Fe³⁺+2Ti), where Al or Fe³⁺ are dominant. The W position may contain (OH),F or Cl.

Potassic-ferro-ferri-sadanagaite is defined with
A position: K dominant
C²⁺ position: Fe dominant
C³⁺ position: Fe dominant
W position: (OH) dominant.

Colour:

black

Lustre:

Vitreous

Hardness:

5½ - 6

Specific Gravity:

3.36 (Calculated)

Crystal System:

Monoclinic

Member of:

Sadanagaite Root Name Group > Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup

Type Locality:

ⓘ Ilmen Nature Reserve, Chelyabinsk Oblast, Russia

This material was named potassic-ferrisadanagaite in the original description, but the analaysed material has Fe²⁺>>Mg, and after the redefinition of the sadanagaite group in the 2012 amphibole nomenclature, the correct name is potassic-ferro-ferri-sadanagaite.

Unique IdentifiersHide

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Mindat ID:

7033

Long-form identifier:

mindat:1:1:7033:7

GUID
(UUID V4):

22a5c08e-7bd2-4170-bab0-171828dad43d

Classification of Potassic-ferro-ferri-sadanagaiteHide

Mineral SymbolsHide

Physical Properties of Potassic-ferro-ferri-sadanagaiteHide

Optical Data of Potassic-ferro-ferri-sadanagaiteHide

Type:

Biaxial (-)

RI values:

n_α = 1.696 n_β = 1.700 n_γ = 1.715

Max Birefringence:

δ = 0.019

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

High

Dispersion:

r > v

Chemical Properties of Potassic-ferro-ferri-sadanagaiteHide

Crystallography of Potassic-ferro-ferri-sadanagaiteHide

Geological EnvironmentHide

Type Occurrence of Potassic-ferro-ferri-sadanagaiteHide

Synonyms of Potassic-ferro-ferri-sadanagaiteHide

Other Language Names for Potassic-ferro-ferri-sadanagaiteHide

Relationship of Potassic-ferro-ferri-sadanagaite to other SpeciesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for Potassic-ferro-ferri-sadanagaiteHide

References for Potassic-ferro-ferri-sadanagaiteHide

Reference List:

Year ⬇Author Title Publisher

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 128(4): 50-55.

Sokolova, E.V., Hawthorne, F.C., Kabalov, Y.K., Schneider, J., McCammon, C.A. (2000)

Sokolova, E. V., Hawthorne, F. C., Kabalov, Y. K., Schneider, J., McCammon, C. (2000) The crystal chemistry of potassic-ferrisadanagaite. The Canadian Mineralogist, 38 (3) 669-674 doi:10.2113/gscanmin.38.3.669

Hawthorne, F. C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist, 44 (1) 1-21 doi:10.2113/gscanmin.44.1.1

Hawthorne, F.C., Harlow, G.E. (2008) The crystal chemistry of Al-rich amphiboles: Sadanagaite and potassic-ferrisadanagaite. The Canadian Mineralogist: 46: 151-162.

Hawthorne, F. C., Oberti, R., Harlow, G. E., Maresch, W. V., Martin, R. F., Schumacher, J. C., Welch, M. D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist, 97 (11). 2031-2048 doi:10.2138/am.2012.4276

Localities for Potassic-ferro-ferri-sadanagaiteHide

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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.

Argentina
Mendoza Province Las Heras Department Capdevilla District ⓘ Puesto la Peña alkaline complex	Pagano, D.S., Galliski, M.Á., Márquez-Zavalía, M.F., Colombo, F. (2016): Petrology and mineralogy of the La Peña igneous complex, Mendoza, Argentina: An alkaline occurrence in the Miocene magmatism of the Southern Central Andes. Journal of South American Earth Sciences: 67 (in press) (2016) Pagano Género, D. S., Galliski, M. A., Marquez Zavalia, M. F., & Colombo, F. (2016). Petrology and mineralogy of the La Peña igneous complex, Mendoza, Argentina: An alkaline occurrence in the Miocene magmatism of the Southern Central Andes.
Russia (TL)
Chelyabinsk Oblast ⓘ Ilmen Nature Reserve (TL)	[AmMin 85:1563] Frank C. Hawthorne, George E. Harlow (2008): THE CRYSTAL CHEMISTRY OF Al-RICH AMPHIBOLES: SADANAGAITE AND POTASSIC-FERRISADANAGAITE, The Canadian Mineralogist Vol. 46, pp. 151-162