Boltwoodite R060753

Name: Boltwoodite
RRUFF ID: R060753
Ideal Chemistry: (K,Na)(UO2)(SiO3OH)·1.5H2O
Locality: Rossing mine, between Rossing & Arandis, near Swakopmund, Namibia
Source: Michael Scott S100288 [view label]
Owner: RRUFF
Description: Radiating tufts of pale yellow-orange bladed crystals
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
RRUFF ID: R060753.2
Sample Description: Microprobe Fragment
Sample Description: Unoriented sample.

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RRUFF ID: R060753
Sample Description: Unoriented sample.
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R060753.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.058(4)Å    b: 7.045(3)Å    c: 6.629(3)Å
alpha: 90°    beta: 105.38(1)°    gamma: 90°   Volume: 317.8(7)Å3    Crystal System: monoclinic
  File Type Information Close
Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Boltwoodite

American Mineralogist Crystal Structure Database Record: [view record]

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]

Frondel C, Ito J (1956) Boltwoodite, a new uranium silicate, Science, 124, 931-931

Fleischer M (1957) New mineral names, American Mineralogist, 42, 307-308   [view file]

Honea R M (1961) New data on boltwoodite, an alkali uranyl silicate, American Mineralogist, 46, 12-25   [view file]

Stohl F V, Smith D K (1981) The crystal chemistry of the uranyl silicate minerals, American Mineralogist, 66, 610-625   [view file]

Vochten R, Blaton N, Peeters O, Van Springel K, Van Haverbeke L (1997) A new method of synthesis of boltwoodite and of formation of sodium boltwoodite, uranophane, sklodowskite and kasolite from boltwoodite, The Canadian Mineralogist, 35, 735-741   [view file]

Burns P C (1998) The structure of boltwoodite and implications of solid solution toward sodium boltwoodite, The Canadian Mineralogist, 36, 1069-1075   [view file]

Frost R L, Čejka J, Weier M L, Martens W (2006) Molecular structure of the uranyl silicates - a Raman spectroscopic study, Journal of Raman Spectroscopy, 37, 538-551