Warwickite R120161

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Record 2 of 2  

Name: Warwickite
RRUFF ID: R120161
Ideal Chemistry: (Mg,Ti,Fe,Cr,Al)2O(BO3)
Locality: South Baptiste Lake roadcut, Bancroft, Ontario, Canada
Source: Michael J. Bainbridge [view label]
Owner: RRUFF
Description: Black prismatic crystals
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Warwickite (3) ]
Quick search: [ All Warwickite samples (2) ]
Sample Description: Unoriented Raman on the primary sample

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RRUFF ID: R120161
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R120161.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 9.259(1)Å    b: 9.395(2)Å    c: 3.1099(4)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 270.51(7)Å3    Crystal System: orthorhombic
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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 Warwickite

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]

Shephard C U (1838) Notice of warwickite, a new mineral species, American Journal of Science and Arts, 34, 313-315   [view file]

Bertaut E F (1950) Structures des boroferrites, Acta Crystallographica, 3, 473-474

Takéuchi Y, Watanabé T, Ito T (1950) The crystal structures of warwickite, ludwigite and pinakiolite, Acta Crystallographica, 3, 98-107

Moore P B, Araki T (1974) Pinakiolite, Mg2Mn3+O2[BO3]; warwickite, Mg(Mg0.5Ti.05)O[BO3]; wightmanite, Mg5(O)(OH)5[BO3]·nH2O: Crystal chemistry of complex 3 A wallpaper structures, American Mineralogist, 59, 985-1004   [view file]

Bigi S, Brigatti M F, Capedri S (1991) Crystal chemistry of Fe- and Cr-rich warwickite, American Mineralogist, 76, 1380-1388   [view file]

Lupulescu M V, Ehlers A M, Hughes J M, Bailey D G (2020) Warwickite from St. Lawrence County, New York: Mineral association, chemical composition, cation ordering, and splitting of the warwickite M1 site, The Canadian Mineralogist, 58, 183-190