Scottyite R141116



Name: Scottyite
RRUFF ID: R141116
Ideal Chemistry: BaCu2Si2O7
Locality: Wessels mine, Kalahari manganese field, Northern Cape Province, South Africa
Source: Jaco and Tania Janse van Nieuwenhuizen [view label]
Owner: RRUFF
Description: Dark blue granular or blocky crystals associated with light-blue platy lavinskyite (R141115) and blue wesselsite.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Quick search: [ All Scottyite samples (4) ]
CHEMISTRY 
RRUFF ID: R141116.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ba1.01Sr0.02Cu2.03Na0.01Si1.97O7; (Scottyite is light grey material in image, associated with dark grey R141115 lavinskyite)
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R141116
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Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R141116.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 6.846(2)Å    b: 13.144(4)Å    c: 6.877(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 618.86(9)Å3    Crystal System: orthorhombic
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Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Scottyite

American Mineralogist Crystal Structure Database Record: [view record]

Janczak J, Kubiak R, Glowiak T (1990) Structure of barium copper pyrosilicate at 300 K, Acta Crystallographica, C4146, 1383-1385

Hentschel G (1993) Die Lavaströme der Graulai: eine neue Fundstelle in der Westeifel. Unsichere und unbekannte Minerale. B. Unbekanntes Ba-Cu-Silikat, Lapis, 18, 23-23

Yamada T, Hiroi Z, Takano M (2001) Spin-1/2 quantum antiferromagnetic chains with tunable superexchange interactions found in BaCu2(Si1-xGex)2O7, Journal of Solid State Chemistry, 156, 101-109

Sologubenko A V, Ott H R, Dhalenne G, Revcolevschi A (2003) Universal behavior of spin-mediated energy transport in S=1/2 chain cuprates: BaCu2Si2O7 as an example, Europhysics Letters, 62, 540-546

Glazkov V N, Smirnov A I, Revcolevschi A, Dhalenne G (2005) Magnetic resonance study of the spin-reorientation transitions in the quasi-one-dimensional antiferromagnet BaCu2Si2O7, Physical Review B, 72, 104401-8

Blaβ G, Schüller E, Schüller W (2011) „Unglaubliche" Kupfermineralien aus der Vulkaneifel: Auf'm Kopp bei Neroth, Lapis, 22, 21-28, 90

Williams P A, Hatert F, Pasero M, Mills S J (2012) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 14, New minerals and nomenclature modifications approved in 2012, Mineralogical Magazine, 76, 1281-1288   [view file]

Yang H, Downs R T, Evans S H, Pinch W W (2013) Scottyite, the natural analog of synthetic BaCu2Si2O7, a new mineral from the Wessels mine, Kalahari Manganese Fields, South Africa, American Mineralogist, 98, 478-484   [view file]

Chen Y, Zhang Y, Feng S (2014) Hydrothermal synthesis and properties of pigments Chinese purple BaCuSi2O6 and dark blue BaCu2Si2O7, Dyes and Pigments, 105, 167-173