Arakiite R070172
Name: Arakiite
RRUFF ID: R070172
Ideal Chemistry: ZnMn2+12Fe3+2(As3+O3)(As5+O4)2(OH)23
Locality: Langban, Filipstad, Varmland, Sweden
Source: Michael Scott S100741 [view label]
Owner: RRUFF
Description: Reddish brown platey crystals associated with colorless calcite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Hematolite (6) ]
Quick search: [ All Arakiite samples (2) ]
CHEMISTRY 
RRUFF ID: R070172.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Zn0.83Mn2+0.17)Σ=1(Mn2+9.20Mg2.80)Σ=12(Fe3+1.97Mn3+0.03)Σ=2As1.00O3(As1.00O4)2(OH)23; OH estimated by difference and charge balance
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R070172
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 50% of 150mW
DOWNLOADS:

Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R070172.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 14.37(1)Å    b: 8.285(5)Å    c: 24.33(2)Å
alpha: 90°    beta: 93.53(4)°    gamma: 90°   Volume: 2892(3)Å3    Crystal System: monoclinic
  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.

DOWNLOADS:

DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
X Min:    X Max:    X Sort:
REFERENCES for Arakiite

American Mineralogist Crystal Structure Database Record: [view record]

Cooper M A, Hawthorne F C (1999) The effect of differences in coordination on ordering of polyvalent cations in close-packed structures: the crystal structure of arakiite and comparison with hematolite, The Canadian Mineralogist, 37, 1471-1482   [view file]

Roberts A C, Grice J D, Cooper M A, Hawthorne F C, Feinglos M N (2000) Arakiite, a new Zn-bearing hematolite-like mineral from Långban, Värmland, Sweden, The Mineralogical Record, 31, 253-256   [view file]

Jambor J L, Kovalenker V A, Roberts A C (2001) New mineral names, American Mineralogist, 86, 376-379   [view file]

Mandarino J A (2001) New minerals, The Canadian Mineralogist, 39, 1473-1502   [view file]