Luinaite-(OH)
A discredited species name
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About Luinaite-(OH)
Formula:
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Crystal System:
Monoclinic
Name:
For the type locality, Luina (Heazlewood district, Tasmania, Australia).
First Recorded Locality:
Formerly an approved member of the Tourmaline Group, but discredited as a species in 2022.
Results show the occurrence of a triclinic structure for the studied luinaite-(OH) samples, which differs only in terms of a slight structural distortion from typical trigonal tourmaline structure (the topology of the structure is retained).
Triclinic luinaite-(OH) from the type locality (Australia) can be considered as the triclinic dimorph of schorl, as its chemical composition corresponds to schorl, and thus it should be referred as schorl-1A. Similarly, the triclinic sample from the USA can be considered as the triclinic dimorph of oxy-dravite, as its chemical composition corresponds to oxy-dravite, and then is referred to as oxy-dravite-1A.
previous text:
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).
Results show the occurrence of a triclinic structure for the studied luinaite-(OH) samples, which differs only in terms of a slight structural distortion from typical trigonal tourmaline structure (the topology of the structure is retained).
Triclinic luinaite-(OH) from the type locality (Australia) can be considered as the triclinic dimorph of schorl, as its chemical composition corresponds to schorl, and thus it should be referred as schorl-1A. Similarly, the triclinic sample from the USA can be considered as the triclinic dimorph of oxy-dravite, as its chemical composition corresponds to oxy-dravite, and then is referred to as oxy-dravite-1A.
previous text:
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).
Unique Identifiers
Mindat ID:
39672
Long-form identifier:
mindat:1:1:39672:7
GUID
(UUID V4):
(UUID V4):
f2e7234c-f151-4102-865c-5dffa54b3cb8
IMA Classification of Luinaite-(OH)
Discredited
IMA Formula:
(Na,◻)(Fe2+,Mg)3Al6(BO3)3Si6O18(OH)4
Approval year:
2009
Approval history:
3.5 IMA 21-L: discreditation of luinaite-(OH), (Na,□)(Fe2+,Mg)3Al6(BO3)3Si6O18(OH)4, a mineral species of the tourmaline supergroup
Proposal 21-L is accepted, and luinaite-(OH) is discredited. This monoclinic tourmaline-type species, with a simplified composition (Na,□)(Fe2+,Mg)3Al6(BO3)3Si6O18(OH)4, was approved with IMA number 2009-046. It is now considered a structurally similar polymorph of schorl, since it only differs in terms of a slight structural distortion from the typical trigonal tourmaline structure.
Proposal 21-L is accepted, and luinaite-(OH) is discredited. This monoclinic tourmaline-type species, with a simplified composition (Na,□)(Fe2+,Mg)3Al6(BO3)3Si6O18(OH)4, was approved with IMA number 2009-046. It is now considered a structurally similar polymorph of schorl, since it only differs in terms of a slight structural distortion from the typical trigonal tourmaline structure.
Classification of Luinaite-(OH)
9.CK.05
9 : SILICATES (Germanates)
C : Cyclosilicates
K : [Si6O18]12- 6-membered single rings, with insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
K : [Si6O18]12- 6-membered single rings, with insular complex anions
61.3.7.
61 : CYCLOSILICATES Six-Membered Rings
3 : Six-Membered Rings with borate groups
61 : CYCLOSILICATES Six-Membered Rings
3 : Six-Membered Rings with borate groups
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Lui-OH | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Luinaite-(OH)
Mindat Formula:
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Crystallography of Luinaite-(OH)
Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bm
Setting:
Cm
Cell Parameters:
a = 10.408(3) Å, b = 15.991(5) Å, c = 7.189(2) Å
β = 117.44(2)°
β = 117.44(2)°
Ratio:
a:b:c = 0.651 : 1 : 0.45
Unit Cell V:
1,061.88 ų (Calculated from Unit Cell)
Comment:
Strongly pseudorhombohedral.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.47 Å | (55) |
| 4.26 Å | (52) |
| 4.01 Å | (79) |
| 3.51 Å | (49) |
| 2.98 Å | (48) |
| 2.59 Å | (100) |
| 2.06 Å | (41) |
| 2.05 Å | (44) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
First Recorded Occurrence of Luinaite-(OH)
Synonyms of Luinaite-(OH)
Other Language Names for Luinaite-(OH)
German:Luinait-(OH)
Japanese:ルイナ電氣石
Common Associates
Associated Minerals Based on Photo Data:
| 35 photos of Luinaite-(OH) associated with Quartz | SiO2 |
| 7 photos of Luinaite-(OH) associated with Fluorite | CaF2 |
| 4 photos of Luinaite-(OH) associated with Ferberite | FeWO4 |
| 2 photos of Luinaite-(OH) associated with Dolomite | CaMg(CO3)2 |
| 2 photos of Luinaite-(OH) associated with Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| 1 photo of Luinaite-(OH) associated with Chamosite | (Fe2+)5Al(Si,Al)4O10(OH,O)8 |
| 1 photo of Luinaite-(OH) associated with Analcime | Na(AlSi2O6) · H2O |
| 1 photo of Luinaite-(OH) associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 1 photo of Luinaite-(OH) associated with Cassiterite | SnO2 |
| 1 photo of Luinaite-(OH) associated with Siderite | FeCO3 |
Related Minerals - Strunz-mindat Grouping
| 9.CK. | Fluor-schorl | NaFe2+3Al6(Si6O18)(BO3)3(OH)3F |
| 9.CK. | Darrellhenryite | Na(Al2Li)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK. | Adachiite | CaFe3Al6(Si5AlO18)(BO3)3(OH)3(OH) |
| 9.CK. | Bosiite | NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O |
| 9.CK. | Dutrowite | Na(Fe2+2.5Ti0.5)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK. | Celleriite | ◻(Mn2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK. | Princivalleite | Na(Mn2Al)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK. | Alumino-oxy-rossmanite | ◻Al3Al6(Si5AlO18)(BO3)3(OH)3O |
| 9.CK. | Ferro-bosiite | NaFe3+3(Al4Fe2+2)(Si6O18)(BO3)3(OH)3O |
| 9.CK. | Magnesio-dutrowite | Na(Mg2.5Ti0.5)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Fluor-buergerite | NaFe3+3Al6(Si6O18)(BO3)3O3F |
| 9.CK.05 | Chromium-dravite | NaMg3Cr3+6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Feruvite | CaFe2+3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Foitite | ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Liddicoatite | Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Olenite | NaAl3Al6(Si6O18)(BO3)3O3(OH) |
| 9.CK.05 | Povondraite | NaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Schorl | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Magnesio-foitite | ◻(Mg2Al)Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Rossmanite | ◻(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Tsilaisite | NaMn2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Oxy-vanadium-dravite | NaV3(V4Mg2)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Oxy-dravite | Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Oxy-rossmanite | ◻(Li0.5Al2.5)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Fluor-elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F |
| 9.CK.05 | Chromo-alumino-povondraite | NaCr3(Al4Mg2)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Fluor-dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3F |
| 9.CK.05 | Oxy-schorl | Na(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Fluor-liddicoatite | Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3F |
| 9.CK.05 | Unnamed (F analogue of feruvite) | CaFe2+3(Al5Mg)(Si6O18)(BO3)3(OH)3F |
| 9.CK.05 | UM2000-64-SiO:BFeHKMg | (K,Na)Fe3+3(Mg2Fe3+4)Si6O18(BO3)3(OH)3O |
| 9.CK.05 | Oxy-chromium-dravite | NaCr3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Fluor-tsilaisite | NaMn2+3Al6(Si6O18)(BO3)3(OH)3F |
| 9.CK.05 | Vanadio-oxy-chromium-dravite | NaV3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Fluor-uvite | CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3F |
| 9.CK.05 | Vanadio-oxy-dravite | NaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Maruyamaite | K(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Lucchesiite | CaFe2+3 Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Oxy-foitite | ◻(Fe2+Al2)Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Oxy-uvite | CaMg3Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Magnesio-lucchesiite | CaMg3Al6(Si6O18)(BO3)3(OH)3O |
| 9.CK.05 | Uvite | CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) |
| 9.CK.05 | Fluor-rossmanite | ◻(Al2Li)Al6(Si6O18)(BO3)3(OH)3F |
| 9.CK.10 | Abenakiite-(Ce) | Na26Ce6(Si6O18)(PO4)6(CO3)6(SO2)O |
| 9.CK.15 | Scawtite | Ca7(Si3O9)2CO3 · 2H2O |
| 9.CK.20 | Steenstrupine-(Ce) | Na14Mn2+2Fe3+2Ce6Zr(Si6O18)2(PO4)6(PO3OH)(OH)2 · 2H2O |
| 9.CK.20 | Thorosteenstrupine | (Ca,Th,Mn)3Si4O11F · 6H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Luinaite-(OH)
mindat.org URL:
https://www.mindat.org/min-39672.html
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References for Luinaite-(OH)
Reference List:
Kolitsch, Uwe, Husdal, Tomas A., Brandstätter, Franz, Ertl, Andreas (2011) New crystal-chemical data for members of the tourmaline group from Norway: occurences of fluor-schorl and luinaite-(OH). Norsk Bergverksmuseum Skrift, 46. 17-24
Kolitsch, Uwe, Andresen, Peter, Husdal, Tomas Andersen, Ertl, Andreas, Haugen, Astrid, Ellingsen, Hans Vidar, Larsen, Alf Olav (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 Bergverksmuseum Skrift, 50. 23-41
Localities for Luinaite-(OH)
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Australia (FRL) | |
| IMA approvals - Sept. 2009 |
| IMA approvals - Sept. 2009 +1 other reference |
| R Bottrill & A Tuma collections | |
| IMA approvals - Sept. 2009 |
Brazil | |
| S. Mills type description in prep |
Norway | |
| Kolitsch et al. (2011) |
| Kolitsch et al. (2013) |
| Kolitsch et al. (2013) | |
| Peter Andresen collection. +1 other reference |
| Nordrum (2012) +1 other reference |
USA | |
| IMA approvals - Sept. 2009 |
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Bald Hornet Prospect, Snoqualmie Mining District, King County, Washington, USA