Lópezite R070043

Name: Lópezite
RRUFF ID: R070043
Ideal Chemistry: K2Cr2O7
Locality: Synthetic, made in the Czech Republic
Source: Michael Scott S101397 [view label]
Owner: RRUFF
Description: Red single crystal
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
RRUFF ID: R070043.2
Sample Description: Microprobe Fragment
Measured Chemistry: K1.93Cr2.01O7
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R070043
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 40% of 150mW
RRUFF ID: R070043.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.421(1)Å    b: 13.370(4)Å    c: 7.360(3)Å
alpha: 98.03(2)°    beta: 90.75(2)°    gamma: 96.29(1)°   Volume: 718.4(3)Å3    Crystal System: triclinic
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Lópezite

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]

Bandy M C (1937) Lopezite, a new mineral, American Mineralogist, 22, 929-930   [view file]

Brunton G (1973) Refinement of the structure of K2Cr2O7, Materials Research Bulletin, 8, 271-274

Krivovichev S V, Kir’yanova E V, Filatov S K, Burns P C (2000) β-K2Cr2O7, Acta Crystallographica, C56, 629-630

Weakley T J R, Ylvisaker E R, Yager R J, Stephens J E, Wiegel R D, Mengis M, Bauer M R, Wu P, Photinos P, Abrahams S C (2007) Phase transitions in K2Cr2O7 and structural redeterminations of phase II, Acta Crystallographica, B60, 705-715