Grandaite R220046
Name: Grandaite
RRUFF ID: R220046
Ideal Chemistry: Sr2Al(AsO4)2(OH)
Locality: Valletta mine, Maira Valley, Piedmont, Italy
Source: Fernando Cámara
Owner: Fernando Cámara
Description: Thin masses of bright orange to salmon to brown crystals. Type sample from Cámara et al (2014)
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Brackebuschite (17) ]
CHEMISTRY 
RRUFF ID: R220046.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Sr1.41Ca0.64Ba0.05Pb0.01)(Al0.68Fe3+0.14Mn3+0.12Mg0.13)[(As0.96V0.01)O4]2(OH)
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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Raman Data (Processed)
RRUFF File
Raman Data (RAW) View Graph
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R220046
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Jobin-Yvon Horiba Labram 632nm @ 100% of 2mW
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Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R220046
Sample Description: Powder
Cell Refinement Output: a: 7.575(1)Å    b: 5.9526(9)Å    c: 8.765(2)Å
alpha: 90°    beta: 112.55(2)°    gamma: 90°   Volume: 366.62(4)Å3    Crystal System: monoclinic
  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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X-ray Data (XY - RAW) View Graph
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REFERENCES for Grandaite

American Mineralogist Crystal Structure Database Record: [view record]

Williams P A, Hatert F, Pasero M, Mills S J (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 18. New minerals and nomenclature modifications approved in 2013, Mineralogical Magazine, 77, 3249-3258   [view file]

Cámara F, Ciriotti M E, Bittarello E, Nestola F, Massimi F, Radica F, Costa E, Benna P, Piccoli G C (2014) Arsenic-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: I. Grandaite, Sr2Al(AsO4)2(OH), description and crystal structure, Mineralogical Magazine, 78, 757-774   [view file]

Uvarova Y, Gagne O C, Belakovskiy D (2015) New mineral names, American Mineralogist, 100, 334-339   [view file]