Important Update News

rruff.info is being updated to improve its interface and content. The beta version of the update is accessible to the public at www.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. Once released, the address will revert to RRUFF.info.

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

Dondoellite R140175

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 33 of 144  


Name: Dondoellite
RRUFF ID: R140175
Ideal Chemistry: Ca2Fe(PO4)2·2H2O
Locality: Messel mine, Messel, Darmstadt, Hesse, Germany
Source: Rock Currier [view label]
Owner: RRUFF
Description: Pale greenish white hemispherical or sheaflike aggregates of lamellar crystals, associated with anapaite (R141081). The cell parameters do not match messelite, but may be a related phase, perhaps a polytype. Needs more work.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ fairfieldite (16) ]
Quick search: [ All Dondoellite samples (2) ]
CHEMISTRY 
RRUFF ID: R140175
Sample Description: Microprobe Fragment
Measured Chemistry: Ca1.98(Fe0.88Mg0.09)(P1.01O4)2·2H2O ; trace amount of Mn
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary 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: R140175
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R140175.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.4780(7)Å    b: 5.7373(8)Å    c: 13.006(2)Å
alpha: 98.814(8)°    beta: 96.170(7)°    gamma: 108.537(7)°   Volume: 377.6(1)Å3    Crystal System: triclinic
DOWNLOADS:
X Min:    X Max:    X Sort:
REFERENCES for Dondoellite

Miyawaki R, Hatert F, Pasero M, Mills S J (2021) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 63, Mineralogical Magazine, 85, 910-915   [view file]

Yang H, Gibbs R B, McGlasson J A, Jenkins, R A, Downs R T (2022) Dondoellite, Ca2Fe(PO4)2·2H2O, a new mineral species polymorphic with messelite, from Rapid Creek, Yukon, Canada, The Canadian Mineralogist, 60, 837-847   [view file]