Roselite-β R150065



Name: Roselite-β
RRUFF ID: R150065
Ideal Chemistry: Ca2Co(AsO4)2·2H2O
Locality: Bou Azzer, Morocco
Source: Bob Jenkins
Owner: RRUFF
Description: Rose-red granular aggregates
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ fairfieldite (11) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R150065
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Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R150065.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.8896(3)Å    b: 6.9811(4)Å    c: 5.5650(3)Å
alpha: 97.348(2)°    beta: 108.921(1)°    gamma: 108.203(1)°   Volume: 198.82(3)Å3    Crystal System: triclinic
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REFERENCES for Roselite-β

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 (1955) Neomesselite and beta-roselite: two new members of the fairfieldite group, American Mineralogist, 40, 828-833   [view file]

Fleck M, Kolitsch U, Hertweck B (2002) Natural and synthetic compounds with kröhnkite-type chains: review and classification, Zeitschrift für Kristallographie, 217, 435-443

Joswig W, Paulus E F, Liebscher B (2004) Crystal structure of dicalcium (cobalt,magnesium) diarsenate dihydrate, Ca2(Co0.532Mg0.468)[AsO4]2·2H2O, hydrogen bonding in talmessite, Zeitschrift für Kristallographie, 219, 341-342

Hazen R M, Hystad G, Golden J J, Hummer D R, Liu C, Downs R T, Morrison S M, Ralph J, Grew E S (2017) Cobalt mineral ecology, American Mineralogist, 102, 108-116   [view file]