Jahnsite-(CaMnMg) R060213

Name: Jahnsite-(CaMnMg)
RRUFF ID: R060213
Ideal Chemistry: CaMn2+Mg2Fe3+2(PO4)4(OH)2·8H2O
Locality: Tip Top mine, Custer County, South Dakota, USA
Source: Marcus Origlieri [view label]
Owner: RRUFF
Description: Brown tabular crystals associated with black prismatic rockbridgeite, R060858
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Jahnsite (7) ]
Sample Description: Unoriented sample

  To download sample data,
  please select a specific
  orientation angle.

Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
RRUFF ID: R060213
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 80% of 150mW
RRUFF ID: R060213.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 15.12(2)Å    b: 7.208(9)Å    c: 9.990(11)Å
alpha: 90°    beta: 110.81(5)°    gamma: 90°   Volume: 1018(1)Å3    Crystal System: monoclinic
  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.

X Min:    X Max:    X Sort:
REFERENCES for Jahnsite-(CaMnMg)

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]

Moore P B, Araki T (1974) Jahnsite, CaMn2+Mg2(H2O)8Fe8+2(OH)2[PO4]4: A novel stereoisomerism of ligands about octahedral corner-chains, American Mineralogist, 59, 964-973   [view file]

Moore P B, Ito J (1974) I. Jahnsite, segelerite, and robertsite, three new transition metal phosphate species II. Redefinition of overite, an isotype of segelerite III. Isotypy of robertsite, mitridatite, and arseniosiderite, American Mineralogist, 59, 48-59   [view file]

Moore P B, Ito J (1978) I. Whiteite, a new species, and a proposed nomenclature for the jahnsite-whiteite complex series. II. New data on xanthoxenite. III. Salmonsite discredited, Mineralogical Magazine, 42, 309-323   [view file]