Johninnesite R060249

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Record 351 of 552  

Name: Johninnesite
RRUFF ID: R060249
Ideal Chemistry: Na2Mn2+9Mg7(AsO4)2(Si6O17)2(OH)8
Locality: Kombat mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
Source: William W. Pinch [view label]
Owner: RRUFF
Description: Colorless to tan aggregate of bladed crystals associated with rhodonite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
RRUFF ID: R060249.2
Sample Description: Microprobe Fragment
Measured Chemistry: Na2.00Mn2+9.00(Mg4.04Mn2+2.96)Σ=7(As1.00O4)2(Si6.00O17)2(OH)8 ; (OH) estimated by difference
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R060249
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R060249.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.463(3)Å    b: 11.037(4)Å    c: 9.624(2)Å
alpha: 107.10(1)°    beta: 81.11(1)°    gamma: 111.81(1)°   Volume: 984.9(4)Å3    Crystal System: triclinic
  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.

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REFERENCES for Johninnesite

American Mineralogist Crystal Structure Database Record: [view record]

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]

Dunn P J, Peacor D R, Su S C, Nelen J A, von Knorring O (1986) Johninnesite, a new sodium manganese arsenosilicate from the Kombat Mine, Namibia, Mineralogical Magazine, 50, 667-670   [view file]

Jambor J L, Bladh K W, Ercit T S, Grice J D, Grew E S (1988) New mineral names, American Mineralogist, 73, 927-935   [view file]

Dunn P J (1991) Rare minerals of the Kombat mine, The Mineralogical Record, 22, 421-425

Grice J D, Dunn P J (1994) Johninnesite: Crystal-structure determination and its relationship to other arsenosilicates, American Mineralogist, 79, 991-995   [view file]