 | | Report (issue) | | ZrSi6 O12 (OH)6 Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. display {100}, {010}, and {001}. ...Dispersion and pleochroism: None. Cell Data: Space Group: Pnca. a = 13.956(6) Streak : White. Luster: Vitreous...X-ray Powder Pattern: Saint-Amable sill, Demix-Varennes quarry, Québec, Canada. 3.322 (100), 3.283 (80)...05 96.84 (1) Saint-Amable sill, Demix-Varennes quarry, near Varennes, Québec, Canada; average of 3 electron.... Occurrence: Formed in cavities in a phonolite sill, by post-magmatic hydrothermal processes. Association: |  | | Journal (article/letter/editorial) | | HYDROTERSKITE: A NEW MINERAL SPECIES FROM THE SAINT-AMABLE SILL, QUEBEC, AND A COMPARISON WITH TERSKITE AND... Box 3443, Station D, Ottawa, Ontario K2P 1E4, Canada ABSTRACT Hydroterskite, ideally Na2ZrSi6O12(OH)6...species from the Saint-Amable sill at the Demix-Varennes quarry, near Varennes, Québec, Canada. Hydroterskite...hydroterskite is orthorhombic in the centric space group Pnca, with a 13.956(6), b 14.894(7), c 7.441(4)...likely incorrectly assigned to an acentric space-group. The hydroterskite crystal structure is compared |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | All rights reserved. Published simultaneously in Canada. Reproduction or translation or any part of this...compelation of the American Geological Institute, 4220 King St., Alexandria, VA, 22302-1502. However, without the...Ercit: Canadian Museum of Nature, Ottawa, Ontario, Canada. Richard C. Erd: U.S.G.S., Menlo Park, California...Species containing more than one anion or anion group may be assigned to a separate class or may be assigned...specifies the atomic (cation to anion, or to anion group) ratio for the mineral. This and the remaining numbers |
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Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada