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Giniite R060765
Name: Giniite
RRUFF ID: R060765
Ideal Chemistry: Fe2+Fe3+4(PO4)4(OH)2·2H2O
Locality: Sandamab, Namibia
Source: Michael Scott S101093 [view label]
Owner: RRUFF
Description: Black fragment, associated with triphylite, hureaulite, yellow-greenish tavorite (R140539), and black heterosite.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
CHEMISTRY 
RRUFF ID: R060765.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Fe2+0.91Mn0.11Mg0.02)Σ=1.04Fe3+4.00(PO4)4(OH)2·2H2O
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented black crystal
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060765
Wavelength:
Sample Description: Unoriented black crystal
Instrument settings: Thermo Almega XR 532nm @ 65% of 150mW
DOWNLOADS:

Raman Data (Processed)
RRUFF File
Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R060765.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.3472(6)Å    b: 5.1497(2)Å    c: 14.2338(7)Å
alpha: 90°    beta: 111.175(6)°    gamma: 90°   Volume: 707.24(6)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
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REFERENCES for Giniite

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]

Fleischer M, Cabri L J, Chao G Y, Pabst A (1980) New mineral names, American Mineralogist, 65, 1065-1070   [view file]

Keller P (1980) Giniit, Fe2+Fe3+4[(H2O)2|(OH)2|(PO4)4], ein neues Mineral aus dem Pegmatit von Sandamab bei Usakos, Namibia, Neues Jahrbuch für Mineralogie, Monatshefte, 1980, 49-56

Keller P (1980) Giniit, Fe2+Fe43+[(H2O)2l(OH)2l (PO4)4]: neue kristallographische Daten, Neues Jahrbuch für Mineralogie, Monatshefte, 1980, 561-563

Rouzies D, Varloud J, Millet J M M M (1994) Thermal behaviour and physico-chemical characterization of synthetic and natural iron hydroxyphosphates, Journal of Chemical Society, Faraday Transactions, 90, 3335-3339   [view file]

Dyar M D, Jawin E R, Breves E, Marchand G, Nelms M, Lane M D, Mertzman S A, Bish D L and Bishop J L (2014) Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data, American Mineralogist, 99, 914-942   [view file]

Adcock C T, Hausrath E M, Rampe E B, Yang H, Downs R T (2023) The crystal structure and chemistry of natural giniite and implications for Mars, American Mineralogist, 108, 430-438   [view file]