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|Name:||For the type locality, Luina (Heazlewood district, Tasmania, Australia).|
The OH analogue of Unnamed (F-analogue of Luinaite-(OH)).
A monoclinic-pseudorhombohedral member of the tourmaline group. The symmetry reduction is caused by cation ordering.
Can be correctly identified only using high-resolution XRD (SXRD) studies. EDS-, EPMA- and standard PXRD-analyses are insufficient for a correct identification of luinaite-(OH).
NOTE: Only one of the photos uploaded so far shows a SXRD-analysed sample; all other samples may just be normal schorl.
Classification of Luinaite-(OH)
|IMA status:||Approved 2009|
|Dana 8th edition ID:||61.3.7.|
61 : CYCLOSILICATES Six-Membered Rings
3 : Six-Membered Rings with borate groups
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Type Occurrence of Luinaite-(OH)
|Type Locality:||Mt Cleveland Mine, Luina, Heazlewood district, Tasmania, Australia|
Crystallography of Luinaite-(OH)
|Class (H-M):||m - Domatic|
|Space Group Setting:||Cm|
|Cell Parameters:||a = 10.408(3) Å, b = 15.991(5) Å, c = 7.189(2) Å|
β = 117.44(2)°
|Ratio:||a:b:c = 0.651 : 1 : 0.45|
|Unit Cell Volume:||V 1,061.88 Å³ (Calculated from Unit Cell)|
|X-Ray Powder Diffraction:|
Chemical Properties of Luinaite-(OH)
|Simplified for copy/paste:||Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)|
|Essential elements:||Al, B, Fe, H, Na, O, Si|
|All elements listed in formula:||Al, B, Fe, H, Na, O, Si|
Relationship of Luinaite-(OH) to other Species
|Member of:||Tourmaline Group|
|Other Members of Group:|
|Structurally related to group(s):|
Other Names for Luinaite-(OH)
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Luinaite-(OH)
IMA approvals - September 2009
Mills, S. J. & Groat, L. A. (2008) New minerals related to tourmaline and possible implications on nomenclature. M&M6 (6th Museums & Mineralogy) Conference, Golden, Colorado, USA, 29.
Kolitsch, U., Husdal, T. A., Brandstätter, F. & Ertl, A. (2011): New crystal-chemical data for members of the tourmaline group from Norway: occurences of fluor-schorl and luinaite-(OH).
Kolitsch, U., Andresen, P., Husdal, T. A., Ertl, A., Haugen, A., Ellingsen, H. V. and Larsen, A. O. (2013): Tourmaline-group minerals from Norway, part II: Occurrences of luinaite-(OH) in Tvedalen, Larvik and Porsgrunn, and fluor-liddicoatite, fluor-elbaite and fluor-schorl at Ågskardet, Nordland. Norsk Bergverksmuseet Skrift 50, 23-41.
Best Localities for Luinaite-(OH)
|Best of Species:||Luinaite-(OH)|
Internet Links for Luinaite-(OH)
Localities for Luinaite-(OH)
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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