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Leesite R220018

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Record 1953 of 4216  


Name: Leesite
RRUFF ID: R220018
Ideal Chemistry: K(H2O)2[(UO2)4O2(OH)5]·3H2O
Locality: Jomac mine, White Canyon Mining District, San Juan County, Utah, USA
Source: Jim McGlasson
Owner: RRUFF
Description: Aggregates of yellow to orange euhedral crystals, associated with brochantite.
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Schoepite (4) ]
CHEMISTRY 
RRUFF ID: R220018.2
Sample Description: Microprobe Fragment
Measured Chemistry: (K0.94Cu0.10)Σ1.04(H2O)2[(U0.99O2)4O2(OH)5]·3H2O Calculated based on 20 O atoms.
Reference File: [ View PDF ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R220018
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 30% of 150mW
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Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R220018
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 14.9525(3)Å    b: 14.1232(3) Å    c: 16.8001(3)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 3547.80(12)Å3    Crystal System: orthorhombic
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REFERENCES for Leesite

Hålenius U, Hatert F, Pasero M, Mills S J (2016) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 34. New minerals and nomenclature modifications approved in 2016, Mineralogical Magazine, 80, 1315-1321   [view file]

Olds T A, Plášil J, Kampf A R, Spano T, Haynes P, Carlson S M, Burns P C, Simonetti A, Mills O P (2018) Leesite, K(H2O)2[(UO2)4O2(OH)5]·3H2O, a new K-bearing schoepite-family mineral from the Jomac mine, San Juan County, Utah, U.S.A, American Mineralogist, 103, 143-150   [view file]