Miguelromeroite R070064
Name: Miguelromeroite
RRUFF ID: R070064
Ideal Chemistry: Mn5(AsO4)2(AsO3OH)2·4H2O
Locality: Veta Negra mine, Pampa Larga Mining District, Tierra Amarilla, Chile
Source: Bob Jenkins [view label]
Owner: RRUFF
Description: Sprays of pink thin prismatic crystals associated with siderite and cuproadamite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
CHEMISTRY 
RRUFF ID: R070064.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mn2+4.64Ca0.25Zn0.07Mg0.04)Σ=5(As1.00O3OH)2(As1.00O4)2·3.98H2O; OH estimated by charge balance; H2O by difference
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R070064
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R070064.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 18.019(3)Å    b: 9.281(1)Å    c: 9.776(1)Å
alpha: 90°    beta: 96.115(9)°    gamma: 90°   Volume: 1625.8(5)    Crystal System: monoclinic
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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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DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Miguelromeroite

American Mineralogist Crystal Structure Database Record: [view record]

Kampf A R (2009) Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series, American Mineralogist, 94, 1535-1540

Williams P A, Hatert F, Pasero M (2009) New minerals approved in 2009, in International Mineralogical Association 1-34   [view file]