Turtmannite
A valid IMA mineral species
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About Turtmannite
Unique Identifiers
Mindat ID:
11090
Long-form identifier:
mindat:1:1:11090:5
GUID
(UUID V4):
(UUID V4):
b0b198d3-e045-47a3-a8c6-ab45c6cc7098
IMA Classification of Turtmannite
Approved
IMA Formula:
Mn25O5(VO4)3(SiO4)3(OH)20
Approval year:
2000
First published:
2001
Classification of Turtmannite
8.BE.45
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Tt | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Turtmannite
Vitreous
Transparency:
Transparent
Colour:
Light yellow
Streak:
White
Tenacity:
Very brittle
Cleavage:
Perfect
{0001}
{0001}
Density:
3.80(4) g/cm3 (Calculated)
Optical Data of Turtmannite
Type:
Uniaxial (-)
RI values:
nε = 1.787
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemistry of Turtmannite
Mindat Formula:
(Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+x
Crystallography of Turtmannite
Crystal System:
Trigonal
Cell Parameters:
a = 8.259(2) Å, c = 204.3(3) Å
Ratio:
a:c = 1 : 24.737
Unit Cell V:
12,068.52 Ă
Âł (Calculated from Unit Cell)
Z:
12
Comment:
Cell parameters are in the hexagonal setting.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0002747 | Turtmannite | Brugger J, Armbruster T, Meisser N, Hejny C, Grobety B (2001) Description and crystal structure of turtmannite, a new mineral with a 68 Angstrom period related to mcgovernite American Mineralogist 86 1494-1505 | 2001 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
1.561 Ă | (100) |
2.69 Ă | (80) |
2.38 Ă | (80) |
2.43 Ă | (60) |
2.99 Ă | (40) |
2.83 Ă | (40) |
2.93 Ă | (20) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-đ alteration and/or metamorphism | |
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Turtmannite
General Appearance of Type Material:
Bright yellow micaceous mineral. Flakes measure up to 200 ”m in length.
Place of Conservation of Type Material:
Musée Cantonal de Géologie, Lausanne, Switzerland, holotype (MGL53593) and cotype (MGL58732).
Geological Setting of Type Material:
Fe-Mn ores filling paleokarst pockets in marble. The ore and marble later underwent Tertiary metamorphism under upper greenschist facies conditions.
Associated Minerals at Type Locality:
Reference:
Brugger, J., Armbruster, T., Meisser, N., Hejny, C. & Grobety, B. (2001): Description and crystal structure of turtmannite, a new mineral with a 68 Ă
period related to mcgovernite. American Mineralogist: 86: 1494-1505.
Synonyms of Turtmannite
Other Language Names for Turtmannite
German:Turtmannit
Spanish:Turtmannita
Relationship of Turtmannite to other Species
Member of:
Other Members of this group:
Arakiite | (Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23 | Mon. m : Bb |
Dixenite | CuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6 | Trig. 3 : R3 |
Hematolite | (Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23 | Trig. 3 : R3 |
Kraisslite | Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16 | Orth. 2 2 2 : C2 2 21 |
Mcgovernite | Mn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21 | Trig. 3m (3 2/m) |
Synadelphite | Mn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
Related Minerals - Strunz-mindat Grouping
8.BE.05 | Augelite | Al2(PO4)(OH)3 |
8.BE.10 | Grattarolaite | Fe3+3(PO4)O3 |
8.BE.15 | Cornetite | Cu3(PO4)(OH)3 |
8.BE.20 | Clinoclase | Cu3(AsO4)(OH)3 |
8.BE.25 | Arhbarite | Cu2Mg(AsO4)(OH)3 |
8.BE.25 | Gilmarite | Cu3(AsO4)(OH)3 |
8.BE.30 | Allactite | Mn2+7(AsO4)2(OH)8 |
8.BE.30 | Flinkite | Mn2+2Mn3+(AsO4)(OH)4 |
8.BE.30 | Raadeite | Mg7(PO4)2(OH)8 |
8.BE.30 | Argandite | Mn7(VO4)2(OH)8 |
8.BE.35 | Chlorophoenicite | (Mn,Mg)3Zn2(AsO4)(OH,O)6 |
8.BE.35 | Magnesiochlorophoenicite | (Mg,Mn)3Zn2(AsO4)(OH,O)6 |
8.BE.35 | Mineral E (of Dunn, et. al., 1982) | |
8.BE.40 | Gerdtremmelite | (Zn,Fe)(Al,Fe)2(AsO4)(OH)5 |
8.BE.45 | Dixenite | CuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6 |
8.BE.45 | Hematolite | (Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23 |
8.BE.45 | Kraisslite | Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16 |
8.BE.45 | Mcgovernite | Mn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21 |
8.BE.45 | Arakiite | (Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23 |
8.BE.45 | Carlfrancisite | Mn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42 |
8.BE.50 | Synadelphite | Mn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2O |
8.BE.55 | Holdenite | (Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8 |
8.BE.60 | Kolicite | Mn2+7Zn4(AsO4)2(SiO4)2(OH)8 |
8.BE.65 | Sabelliite | (Cu,Zn)2Zn(AsO4,SbO4)(OH)3 |
8.BE.70 | Jarosewichite | Mn2+3Mn3+(AsO4)(OH)6 |
8.BE.75 | Theisite | Cu5Zn5(AsO4,SbO4)2(OH)14 |
8.BE.80 | Coparsite | Cu4(AsO4,VO4)O2Cl |
8.BE.85 | Waterhouseite | Mn2+7(PO4)2(OH)8 |
8.BE.90 | Vasilseverginite | Cu9O4(AsO4)2(SO4)2 |
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 Turtmannite
mindat.org URL:
https://www.mindat.org/min-11090.html
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References for Turtmannite
Reference List:
Localities for Turtmannite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Switzerland (TL) | |
| AM 86 (2001) +1 other reference |
Quick NavTopAbout TurtmanniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsStrunz-MindatOther InformationInternet Links References Localities Locality List
Pipji glacier, PipjitÀlli, Turtmann Valley, Turtmann-Unterems, Leuk, Valais, Switzerland