Chayesite R080059

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Name: Chayesite
RRUFF ID: R080059
Ideal Chemistry: KMg4Fe3+[Si12O30]
Locality: Pauliberg by Landsee, Burgenland, Austria
Source: Michael Scott S101274 [view label]
Owner: RRUFF
Description: Deep blue interior of hexagonal tablets that are reddish brown on the outside
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Milarite (18) ]
Quick search: [ All Chayesite samples (2) ]
CHEMISTRY 
RRUFF ID: R080059.2
Sample Description: Microprobe Fragment
Measured Chemistry: (K0.70Na0.30)Σ=1(Mg2.10Fe2+1.86Mn0.04)Σ=4(Fe3+0.89Al0.11)Σ=1Si12.00O30 ; lighter core : Fe2+ and Fe3+ split by charge balance
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample; 780 spectrum overwhelmed by fluorescence
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R080059
Wavelength:
Sample Description: Unoriented sample; 780 spectrum overwhelmed by fluorescence
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R080059.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.079(2)Å    b: 10.079(2)Å    c: 14.365(2)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 1263.7(3)Å3    Crystal System: hexagonal
  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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DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Chayesite

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]

Nguyen N, Choisnet J, Raveau B (1980) Silicates synthétiques à structure milarite, Journal of Solid State Chemistry, 34, 1-9

Velde D, Medenbach O, Wagner C, Schreyer W (1989) Chayesite, K(Mg,Fe2+)4Fe3+[Si12O30]: A new rock-forming silicate mineral of the osumilite group from the Moon Canyon (Utah) lamproite, American Mineralogist, 74, 1368-1373   [view file]

Alietti E, Brigatti M F, Capedri S, Poppi L (1994) The roedderite-chayesite series from Spanish lamproites: crystal chemical characterization, Mineralogical Magazine, 58, 655-662   [view file]

Gagné O C, Hawthorne F C (2016) Chemographic exploration of the milarite-type structure, The Canadian Mineralogist, 54, 1229-1247

Miyawaki R, Hatert F, Pasero M, Mills S J (2019) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 50. New minerals and nomenclature modifications approved in 2019, Mineralogical Magazine, 83, 615-620   [view file]