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.
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Name: Holtstamite RRUFF ID: R170001 Ideal Chemistry: Ca3Al2(SiO4)2(OH)4 Locality: Wessels mine, Kalahari manganese field, South Africa Source: Paul Botha Owner: RRUFF Description: Yellow to brownish-yellow granular crystals, associate with Mn-rich vesuvianite, calcite, and henritermierite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
Mineral Group: [ garnet (97) ] |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||
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RRUFF ID: | R170001.9 | ||||
Sample Description: | Single crystal, powder profile is calculated | ||||
Cell Refinement Output: |
a: 12.2878(30)Å b: 12.2878(30)Å c: 11.9748(53)Å alpha: 90° beta: 90° gamma: 90° Volume: 1808.06(36)Å3 Crystal System: tetragonal |
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DOWNLOADS:
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REFERENCES for Holtstamite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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Gerya T, Maresch W, Burchard M, Zakhartchouk V, Doltsinis N, Fockenberg T (2005) Thermodynamic modeling of solubility and speciation of silica in H2O-SiO2 fluid up to 1300°C and 20 kbar based on the chain reaction formalism, European Journal of Mineralogy, 17, 269-283 |
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Halenius U, Haussermann U, Harryson H (2005) Holtstamite, Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x, a new tetragonal hydrogarnet from Wessels Mine, South Africa, European Journal of Mineralogy, 17, 375-382 [view file] |
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Piilonen P C, Locock A, Grew E S (2005) New mineral names, American Mineralogist, 90, 1945-1952 [view file] |
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Grew E S, Locock A J, Mills S J, Galuskina I O, Galuskin E V, Hålenius U (2013) Nomenclature of the garnet supergroup, American Mineralogist, 98, 785-811 [view file] |
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