Important Update News

The RRUFF Project (rruff.info) is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional.

We are grateful to NASA for the funding of this effort.

Robertsite R120040

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 1839 of 4216  


Name: Robertsite
RRUFF ID: R120040
Ideal Chemistry: Ca2Mn3+3O2(PO4)3·3H2O
Locality: Tip Top mine, Custer County, South Dakota, USA
Source: Mark N. Feinglos [view label]
Owner: RRUFF
Description: Dark reddish brown plates on bobdownsite. This sample was used to determine the structure reported in Andrade et al (2012)
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Arseniosiderite (5) ]
Quick search: [ All Robertsite samples (2) ]
CHEMISTRY 
RRUFF ID: R120040.2
Sample Description: Composition is from the type sample
Measured Chemistry: Ca1.93(Mn2.92Fe0.07)Σ=2.99O1.84(PO4)3.04·2.72H2O
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
DOWNLOADS:

  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:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R120040
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 80% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R120040.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 17.3400(9)Å    b: 19.446(1)Å    c: 11.2787(6)Å
alpha: 90°    beta: 96.634(3)°    gamma: 90°   Volume: 3777.7(5)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 Robertsite

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, 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]

Van Kauwenbergh S J, Cooper-Fleck M, Williams M R (1988) The occurrence of robertsite in a sedimentary phosphate ore from Thailand, Mineralogical Magazine, 52, 505-508   [view file]

Jambor J L, Burke E A J (1989) New mineral names, American Mineralogist, 74, 1399-1404   [view file]

Andrade M B, Morrison S M, Di Domizio A J, Feinglos M N, Downs R T (2012) Robertsite, Ca2MnIII3O2(PO4)3·3H2O, Acta Crystallographica, E68, i74-i75   [view file]