Amesite R070116

Name: Amesite
RRUFF ID: R070116
Ideal Chemistry: Mg2Al(AlSiO5)(OH)4
Locality: Saranovskii Mine (Saranovskoye), Saranovskaya (Sarany; Saranje) Village, Gorozavod area, Permskaya Oblast', Urais Region, Russia
Source: Michael Scott S100416 [view label]
Owner: RRUFF
Description: Purple thin micaceous crystals, not a standard polytype, see Wiewiora et al (Am Min 76 (1991) 647-652)
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Groups: [ Clay (86) ] [ serpentine (12) ]
Quick search: [ All Amesite samples (2) ]
RRUFF ID: R070116.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mg1.88Cr0.04Fe2+0.03)(Al0.96Cr0.04)(Si1.06Al0.94)O5(OH)4 ; OH estimated by difference
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R070116
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R070116.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.296(5)Å    b: 9.17(1)Å    c: 14.37(1)Å
alpha: 102.33(5)°    beta: 90.51(6)°    gamma: 90.01(5)°   Volume: 682.8(4)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.

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REFERENCES for Amesite

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]

Shepard C U (1876) Order XI. Talcite. Amesine, in Catalogue of minerals found within about 75 miles of Amherst College, Ms Amherst 4-4   [view file]

Steadman R, Nuttall P M (1962) The crystal structure of amesite, Acta Crystallographica, 15, 510-511

Anderson C S, Bailey S W (1981) A new cation ordering pattern in amesite-2H2, American Mineralogist, 66, 185-195   [view file]

Taner M F, Laurent R (1984) Iron-rich amesite from the Lake Asbestos mine, Black Lake, Quebec, The Canadian Mineralogist, 22, 437-442   [view file]

Bailey S W (1988) Structures and compositions of other trioctahedral 1:1 phyllosilicates, Reviews in Mineralogy and Geochemistry, 19, 169-188

Wiewióra A (1990) Crystallochemical classifications of phyllosilicates based on the unified system of projection of chemical composition: III. The serpentine-kaolin group, Clay Minerals, 25, 93-98   [view file]

Wiewióra A, Rausell-Colom J A, García-González T (1991) The crystal structure of amesite from Mount Sobotka: A nonstandard polytype, American Mineralogist, 76, 647-652   [view file]

Zheng H, Bailey S W, (1997) Refinement of an amesite-2H1 polytype from Postmasburg, South Africa, Clays and Clay Minerals, 45, 301-310

Bobos I, Noronha F, Mateus A (2018) Fe-, Fe,Mn- and Fe,Mg-chlorite: a genetic linkage to W, (Cu,Mo) mineralization in the magmatic-hydrothermal system at Borralha, northern Portugal, Mineralogical Magazine, 82, S259-S279