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Name: Hilgardite RRUFF ID: R070427 Ideal Chemistry: Ca2B5O9Cl·H2O Locality: Boulby mine, Loftus, Cleveland, England, UK Source: Michael Scott S104632 [view label] Owner: RRUFF Description: Massive etched pink crystallline associated with pale green boracite, polytype 3TC Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
| Quick search: [ All Hilgardite samples (2) ] | ||
| CHEMISTRY | ||||||
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| POWDER DIFFRACTION | |||||||
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| RRUFF ID: | R070427.9 | ||||||
| Sample Description: | Single crystal, powder profile is calculated | ||||||
| Cell Refinement Output: |
a: 6.464(1)Å b: 6.561(1)Å c: 6.296(1)Å alpha: 61.599(9)° beta: 118.72(1)° gamma: 105.84(1)° Volume: 205.7(1) Crystal System: triclinic |
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| REFERENCES for Hilgardite | |
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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] |
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Hurlbut C S, Taylor R E (1937) Hilgardite, a new mineral species from Choctaw Salt Dome, Louisiana, American Mineralogist, 22, 1052-1057 [view file] |
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Kondrat'eva V V (1964) X-ray diffraction studies of some minerals of the hilgardite group, Rentgenografia Mineral'nogo Syr'ia, Moscow ('Nedra'), 4, 10-18 [view file] |
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Bailey S W (1977) Report of the I.M.A-I.U.Cr. Joint Committee on Nomenclature, American Mineralogist, 62, 411-415 [view file] |
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Ghose S (1985) A new nomenclature for the borate minerals in the hilgardite (Ca2B5O9Cl·H2O)tyretskite (Ca2B5O9OH·H2O) group, American Mineralogist, 70, 636-637 [view file] |
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Nickel E H (1993) Standardization of polytype suffixes, Mineralogical Magazine, 57, 756-756 [view file] |
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Burns P C, Hawthorne F C (1994) Refinement of the structure of hilgardite-1A, Acta Crystallographica, C50, 653-655 |
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Grice J D, Gault R A, Van Velthuizen J (2005) Borate minerals of the Penobsquis and Millstream deposits, southern New Brunswick, Canada, The Canadian Mineralogist, 43, 1469-1487 [view file] |
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