Warwickite R050674

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Record 1 of 2  

Name: Warwickite
RRUFF ID: R050674
Ideal Chemistry: (Mg,Ti,Fe,Cr,Al)2O(BO3)
Locality: Edenville, Orange County, New York, USA
Source: University of Arizona Mineral Museum 3053 [view label]
Owner: RRUFF
Description: Black prismatic crystals embedded in matrix
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Warwickite (3) ]
Quick search: [ All Warwickite samples (2) ]
RRUFF ID: R050674.2
Sample Description: Microprobe fragment
Measured Chemistry: (Mg1.23Ti0.39Fe2+0.17Al0.19Fe3+0.02)Σ=2O(BO3) ; B not measured but estimated by difference and charge balance
Sample Description: Unoriented sample

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RRUFF ID: R050674
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050674.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
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RRUFF ID: R050674.1
Sample Description: Powder
Cell Refinement Output: a: 9.2184(4)Å    b: 3.09355(9)Å    c: 9.3629(5)Å
alpha: 90.°    beta: 90.°    gamma: 90.°   Volume: 267.01(1)Å3    Crystal System: orthorhombic
  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.

  File Type Information Close
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