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|   |   | Name: Fredrikssonite RRUFF ID: R130112 Ideal Chemistry: Mg2Mn3+O2(BO3) Locality: Langban, Filipstad, Varmland, Sweden Source: Rock Currier [view label] Owner: RRUFF Description: Opaque reddish black striated prismatic crystals, associated with calcite and granular hausmannite. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. | 
| Mineral Group: [ Ludwigite (5) ] | ||
| RAMAN SPECTRUM | ||||||||||||
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| BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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| POWDER DIFFRACTION | |||||||
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| RRUFF ID: | R130112.9 | ||||||
| Sample Description: | Single crystal, powder profile is calculated | ||||||
| Cell Refinement Output: | a: 9.200(2)Å    b: 12.532(3)Å    c: 2.9598(5)Å alpha: 90° beta: 90° gamma: 90° Volume: 341.27(8)Å3 Crystal System: orthorhombic | ||||||
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| REFERENCES for Fredrikssonite | |
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| 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] | |
| Dunn P J, Peacor D R, Simmons W B, Newbury D (1983) Fredrikssonite, a new member of the pinakiolite group, from Långban, Sweden, Geologiska Föreningens i Stockholm Förhandlingar, 105, 335-340 | |
| Dunn P J, Chao G Y, Fitzpatrick J J, Langley R H, Fleischer M, Zilczer J A (1986) New mineral names, American Mineralogist, 71, 227-232 [view file] | |
| Burns P C, Cooper M A, Hawthorne F C (1994) JahnTeller-distorted Mn3+O6 octahedra in fredrikssonite, the fourth polymorph of Mg2Mn3+(BO3)O2, The Canadian Mineralogist, 32, 397-403 [view file] | |
| Cooper M A, Hawthorne F C (1998) The crystal structure of blatterite, Sb5+3(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32, and structural hierarchy in Mn3+-bearing zigzag borates, The Canadian Mineralogist, 36, 1171-1193 [view file] | |
| Frost R L (2011) Raman spectroscopy of selected borate minerals of the pinakiolité group, Journal of Raman Spectroscopy, 42, 540-543 | |
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