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Manjiroite R060379

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Name: Manjiroite
RRUFF ID: R060379
Ideal Chemistry: Na(Mn4+7Mn3+)O16
Locality: Wessels mine, Kalahari Manganese Field, South Africa
Source: Michael Scott S100035 [view label]
Owner: RRUFF
Description: Steel gray bed of parallel fibers
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Coronadite (13) ]
CHEMISTRY 
RRUFF ID: R060379.2
Sample Description: Microprobe fragment
Measured Chemistry: (Na0.60K0.28Ca0.12)(Mn4+7.40Mn2+0.44Mg0.11Si0.03Al0.02)O16ยท2H2O
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060379
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R060379.1
Sample Description: Powder
  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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

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X-ray Data (XY - Processed)
RRUFF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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POWDER DIFFRACTION 
RRUFF ID: R060379.9
Sample Description: Powder, using Mo radiation
Cell Refinement Output: a: 9.970(5)Å    b: 9.970(5)Å    c: 2.8613(6)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 284.4(3)Å3    Crystal System: tetragonal
  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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Cell Refinement Data
Cell Refinement Output Data
DIF File
X-ray Data (XY - Processed)
RRUFF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Manjiroite

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]

Nambu M, Tanida K (1967) Manjirōite, a new manganese dioxide mineral, from Kohare Mine, Iwate Prefecture, Japan, Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 58, 39-54   [view file]

Fleischer M (1968) New mineral names, American Mineralogist, 53, 2103-2106   [view file]

Biagioni C, Capalbo C, Pasero M (2013) Nomenclature tunings in the hollandite supergroup, European Journal of Mineralogy, 25, 85-90   [view file]

Kolitsch U, Rieck B, Brandstätter F, Schreiber F, Fabritz K, Blaß G, Gröbner J (2014) Neufunde aus dem alten Bergbau und den Schlacken von Lavrion (I), Mineralien Welt, 1, 60-75

Vafeas N A, Viljoen K S, Blignaut L C (2018) Characterization of fibrous cryptomelane from the todorokite-cryptomelane mineral assemblage at the Sebilo mine, Northern Cape Province, South Africa, The Canadian Mineralogist, 56, 65-76

Post J E, McKeown D A, Heaney, P J (2020) Raman spectroscopy study of manganese oxides: Tunnel structures, American Mineralogist, 105, 1175-1190   [view file]

Post J E, Heaney P J, Fischer T B, Ilton E S (2022) Manjiroite or hydrous hollandite?, American Mineralogist, 107, 564-571