Kutnohorite R060473


Name: Kutnohorite
RRUFF ID: R060473
Ideal Chemistry: CaMn2+(CO3)2
Locality: N'Chwaning II mine, Kalahari Manganese Field, northern Cape Province, Republic of South Africa
Source: Michael Scott S100370 [view label]
Owner: RRUFF
Description: Aggregate of parallel pink colored acicular crystals
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Dolomite (15) ]
CHEMISTRY 
RRUFF ID: R060473.2
Sample Description: Microprobe fragment
Measured Chemistry: Ca1.00(Mn2+0.63Ca0.35Mg0.02)(CO3)2
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Sample is oriented and mounted on a pin.
Pin ID: L00557
Orientation: Laser parallel to  -a*  (-1 0 0).     Fiducial mark perpendicular to laser is parallel to  -c   [0 0 -1].
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060473
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R060473.1
Sample Description: Powder, mixture with a second carbonate phase
Cell Refinement Output: a: 4.9171(6)Å    b: 4.9171(6)Å    c: 16.607(4)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 347.73(9)Å3    Crystal System: hexagonal
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
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 Kutnohorite

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]

Bukowský A (1903) Kuttenberger manganmineralien, Neues Jahrbuch für Mineralogie, Geologie und Palaontologie, 1903, 338-339   [view file]

Frondel C, Bauer L H (1955) Kutnahorite: A manganese dolomite, CaMn(CO3)2, American Mineralogist, 40, 748-760   [view file]

Žák L, Povondra P (1981) Kutnohorite from the Chvaletice pyrite and manganese deposit, east Bohemia, Tschermaks Mineralogische und Petrographische Mitteilungen, 28, 55-63

Peacor D R, Essene E J, Gaines A M (1987) Petrologic and crystal-chemical implications of cation order-disorder in kutnahorite [CaMn(CO3)2], American Mineralogist, 72, 319-328   [view file]

Farkas L, Bolzenius B H, Schäfer W, Will G (1988) The crystal structure of kutnohorite CaMn(CO3)2, Neues Jahrbuch für Mineralogie, Monatshefte, 1988, 539-546

Polgári M, Bajnóczi B, Kovács Kis V, Götze J, Dobosi G, Tóth M, Vigh T (2007) Mineralogical and cathodoluminescence characteristics of Ca-rich kutnohorite from the Úrkút Mn-carbonate mineralization, Hungary, Mineralogical Magazine, 71, 493-508   [view file]

Palaich S E M, Heffern R A, Watenphul A, Knight J, Kavner A (2015) High-pressure compressibility and phase stability of Mn-dolomite (kutnohorite), American Mineralogist, 100, 2242-2245