Important Update News
The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
We are grateful to NASA for the funding of this effort.
![]() |
![]() |
Name: Shigaite RRUFF ID: R080090 Ideal Chemistry: Mn6Al3(OH)18[Na(H2O)6](SO4)2·6H2O Locality: Ioi Mine, Shiga Prefecture, Kinki Region, Honshu Island, Japan Source: Michael Scott S103622 [view label] Owner: RRUFF Description: Semi-transparent, dull-yellow to pale yellow coating Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
Mineral Groups: [ Woodwardite (5) ] [ Hydrotalcite (22) ] |
RAMAN SPECTRUM | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
POWDER DIFFRACTION | |||||||
---|---|---|---|---|---|---|---|
RRUFF ID: | R080090.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 9.514(2)Å b: 9.514(2)Å c: 33.09(1)Å alpha: 90° beta: 90° gamma: 120° Volume: 2594(1)Å3 Crystal System: hexagonal |
||||||
|
|
REFERENCES for Shigaite | |
---|---|
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] |
|
Peacor D R, Dunn P J, Kato A, Wicks F J (1985) Shigaite, a new manganese aluminum sulfate mineral from the Loi mine, Shiga, Japan, Neues Jahrbuch für Mineralogie, Monatshefte, 1985, 453-457 |
|
Hawthorne F C, Bladh K W, Burke E A J, Ercit S, Grew E S, Grice J D, Puziewicz J, Roberts A C, Schedler R A, Shigley J E (1986) New mineral names, American Mineralogist, 71, 1543-1548 [view file] |
|
Cooper M A, Hawthorne F C (1996) The crystal structure of shigaite, [AlMn2+2(OH)6]3(SO4)2Na(H2O)6(H2O)6, a hydrotalcite-group mineral, The Canadian Mineralogist, 34, 91-97 [view file] |
|
Jambor J L, Kovalenker V A, Puziewics J, Roberts A C (1996) New mineral names, American Mineralogist, 81, 1282-1286 [view file] |
|
Mills S J, Christy A G, Génin J -M R, Kameda T, Colombo F (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides, Mineralogical Magazine, 76, 1289-1336 [view file] |
|
|