Ephesite R060848



Name: Ephesite
RRUFF ID: R060848
Ideal Chemistry: NaLiAl2(Si2Al2)O10(OH)2
Locality: Postmaasburg, South Africa
Source: Michael Scott S100913 [view label]
Owner: RRUFF
Description: Pale pink hexagonal mica books, polytype 2M1
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ mica (46) ]
CHEMISTRY 
RRUFF ID: R060848.2
Sample Description: Microprobe Fragment
Measured Chemistry: Na1.00Li1.00Al2.00(Si2.00Al2.00)O10(OH)2; trace amounts of Fe and Ca; Li and OH assumed by stoichiometry
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample.
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060848
Wavelength:
Sample Description: Unoriented sample.
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R060848.1
Sample Description: powder
Cell Refinement Output: a: 5.1261(8)Å    b: 8.880(2)Å    c: 19.3124(7)Å
alpha: 89.946(6)°    beta: 95.116(8)°    gamma: 89.96(2)°   Volume: 875.6(1)Å3    Crystal System: triclinic
  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.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Ephesite

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]

Smith J L (1851) Memoir on Emery - Second Part - On the minerals associated with emery: corundum, hydrargillite, diaspore, zinc spinel, pholerite, ephesite (a new species), emerylite (a new species), muscovite, chloritoid (a new variety), black tourmaline, chlorite, magnetic oxyd of iron, oligiste iron, hydrated oxyd of iron, iron pyrites, rutile, ilmenite and titaniferous iron, American Journal of Science, 11, 53-66   [view file]

Schaller W T, Carron M K, Fleischer M (1967) Ephesite, Na(LiAl2)(Al2Si2)O10(OH)2, a trioctahedral member of the margarite group, and related brittle micas, American Mineralogist, 52, 1689-1696   [view file]

Slade P G, Schultz P K, Dean C (1987) Refinement of the ephesite structure in C1 symmetry, Neues Jahrbuch für Mineralogie, Monatshefte, 1987, 275-287

Rieder M, Cavazzini G, D’Yakonov Y S, Frank-Kamenetskii V A, Gottardt G, Guggenheim S, Koval P V, Muller G, Neiva A M R, Radoslovich E W, Robert J L, Sassi F P, Takeda H, Weiss Z, Wones D R (1998) Nomenclature of the micas, The Canadian Mineralogist, 36, 905-912   [view file]