Kellyite R060903



Name: Kellyite
RRUFF ID: R060903
Ideal Chemistry: (Mn2+,Mg,Al)3(Si,Al)2O5(OH)4
Locality: Near Bald Knob, Alleghany County, North Carolina, USA
Source: Michael Scott S100995 [view label]
Owner: RRUFF
Description: Light-yellow irregular to platy tablets
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Groups: [ Clay (87) ] [ serpentine (12) ]
CHEMISTRY 
RRUFF ID: R060903.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mn2+1.77Al0.96Mg0.19Fe2+0.08)Σ=3(Si1.04Al0.96)Σ=2O5(OH)4 ; trace amounts of F; the lighter fragment up-right is kutnohorite: (Ca0.81Mn0.19)Σ=1(Mn0.99Mg0.01)Σ=1(CO3)2; C not measured but estimated by difference
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: R060903
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R060903.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.47(1)Å    b: 5.47(1)Å    c: 14.10(5)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 365.4(3)Å3    Crystal System: hexagonal
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REFERENCES for Kellyite

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]

Peacor D R, Essene E J, Simmons W B, Bigelow W C (1974) Kellyite, a new Mn-Al member of the serpentine group from Bald Knob, North Carolina, and new data on grovesite, American Mineralogist, 59, 1153-1156   [view file]