Important Update News
The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
We are grateful to NASA for the funding of this effort.
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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 | ||||||||
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RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | ||||||
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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 |
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REFERENCES for Grandaite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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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] |
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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] |
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Uvarova Y, Gagne O C, Belakovskiy D (2015) New mineral names, American Mineralogist, 100, 334-339 [view file] |
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