Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Magnesio-riebeckite from
Phakant Mine, Hpakant (Hpakan; Phakant; Phakan), Hpakant-Tawmaw Jade Tract, Hpakant Township (Hpakan; Phakant; Phakan), Mohnyin District, Kachin State, Myanmar


Locality type:Mine
Classification
Species:Magnesio-riebeckite
Formula:◻Na2(Mg3Fe23+)(Si8O22)(OH)2
Comments:Wang et al (2013) publish 4 microprobe analyses of amphiboles from here. The normalization and naming of these amphiboles deviates significantly from good practice. Both Andrew J. Locock (2014): An Excel spreadsheet to classify chemical analyses of amphiboles following the IMA 2012 recommendations. Computers & Geosciences, Volume 62, pp 1-11 and Andy Tindle's xl spreadsheet Probe-Amph3.01 give a richterite composition of the analyses published as magnesio-riebeckite.
Confirmation
Validity:Erroneously Reported
Data
Mineral Data:Click here to view Magnesio-riebeckite data
Locality Data:Click here to view Phakant Mine, Hpakant (Hpakan; Phakant; Phakan), Hpakant-Tawmaw Jade Tract, Hpakant Township (Hpakan; Phakant; Phakan), Mohnyin District, Kachin State, Myanmar
Data Identifiers
Mindat Occurrence Record ID:865452
Long-form Identifier:1:3:865452:6
GUID (UUID V4):0
References
Jing Wang, Guanghai Shi, Jun Wang, Ye Yuan, and Mengchu Yang (2013): Acta Petrologica Sinica 29(4), 1450-1460
 
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