Julgoldite-(Fe2+) R070725

Name: Julgoldite-(Fe2+)
RRUFF ID: R070725
Ideal Chemistry: Ca2Fe2+Fe3+2(Si2O7)(SiO4)(OH)2·H2O
Locality: Khandivali Quarry (Kandivali Quarry), Mumbai District (Bombay District), Maharashtra, India
Source: Michael Scott S104176 [view label]
Owner: RRUFF
Description: Clusters of black blades associated with pale green bladed prehnite and quartz
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Pumpellyite (6) ]
RRUFF ID: R070725.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca2.00(Fe2+0.86Mg0.14)Σ=1(Fe3+1.67Al0.33)Σ=2(Si2.00O7)(Si1.00O4)(OH)2·H2O; OH by charge balance = light; Ca2.00(Fe2+0.82Mg0.18)Σ=1(Fe3+1.44Al0.58)Σ=2(Si2.00O7)(Si1.00O4)(OH)2·H2O = darker
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R070725
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R070725.1
Sample Description: Powder, mixed with quartz
Cell Refinement Output: a: 8.912(1)Å    b: 6.0661(6)Å    c: 19.380(2)Å
alpha: 90°    beta: 97.586(9)°    gamma: 90°   Volume: 1038.50(9)Å3    Crystal System: monoclinic
  File Type Information Close
Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Julgoldite-(Fe2+)

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Moore P B (1967) Eleven new minerals from Langban, Sweden, The Canadian Mineralogist, 9, 301-301   [view file]

Fleischer M (1971) New mineral names, American Mineralogist, 56, 2156-2159   [view file]

Moore P B (1971) Julgoldite, the Fe+2 - Fe+3 dominant pumpellyite, a new mineral from Långban, Sweden, Lithos, 4, 93-99

Allmann R, Donnay G (1973) The crystal structure of julgoldite, Mineralogical Magazine, 39, 271-281   [view file]

Passaglia E, Gottardi G (1973) Crystal chemistry and nomenclature of pumpellyites and julgoldites, The Canadian Mineralogist, 12, 219-223   [view file]

Nagashima M, Cametti G, Armbruster T (2018) Crystal chemistry of julgoldite, a mineral series of the pumpellyite group: re-investigation of Fe distribution and hydrogen-bonding, European Journal of Mineralogy, 30, 721-731