Magniotriplite
A variety of Wagnerite
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About Magniotriplite
Formula:
(Mg,Fe2+,Mn2+)2PO4F
Colour:
Reddish-brown.
Lustre:
Vitreous
Hardness:
4
Crystal System:
Monoclinic
Name:
Named in 1951 by Ginzburg et al. for the supposed relation to triplite.
A discredited iron- and magnesium-rich structural variety (polytype) of wagnerite.
Originally described from Karasu granite pegmatite, Turkestan Range, Osh Oblast, Kyrgyzstan and Kyrk-Bulak granite pegmatite, Turkestan Range, Osh Oblast, Kyrgyzstan.
Originally described from Karasu granite pegmatite, Turkestan Range, Osh Oblast, Kyrgyzstan and Kyrk-Bulak granite pegmatite, Turkestan Range, Osh Oblast, Kyrgyzstan.
Unique Identifiers
Mindat ID:
2540 (as Magniotriplite)
4229 (as Wagnerite)
4229 (as Wagnerite)
Long-form identifier:
mindat:1:1:2540:5 (as Magniotriplite)
mindat:1:1:4229:7 (as Wagnerite)
mindat:1:1:4229:7 (as Wagnerite)
IMA Classification of Magniotriplite
Discredited
Classification of Magniotriplite
41.6.1.3
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
22.1.24
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
Physical Properties of Magniotriplite
Optical Data of Magniotriplite
Type:
Biaxial (+)
RI values:
nα = 1.641 nβ = 1.649 nγ = 1.661
2V:
Measured: 60° , Calculated: 80°
Max. Birefringence:
δ = 0.020
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
relatively weak
Chemistry of Magniotriplite
Mindat Formula:
(Mg,Fe2+,Mn2+)2PO4F
Element Weights:
Crystallography of Magniotriplite
Crystal System:
Monoclinic
Cell Parameters:
a = 11.92 Å, b = 12.27 Å, c = 9.66 Å
β = 107.18°
β = 107.18°
Ratio:
a:b:c = 0.971 : 1 : 0.787
Unit Cell V:
1,349.82 ų (Calculated from Unit Cell)
Synonyms of Magniotriplite
Other Language Names for Magniotriplite
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 Magniotriplite
mindat.org URL:
https://www.mindat.org/min-2540.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
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References for Magniotriplite
Reference List:
Ren, L., Grew, E. S., Xiong, M., Ma, Z. (2003) Wagnerite-Ma5bc, a new polytype of Mg2(PO4)(F,OH), from granulite-facies paragneiss, Larsemann Hills, Prydz Bay, East Antarctica. The Canadian Mineralogist, 41 (2) 393-411 doi:10.2113/gscanmin.41.2.393
Chopin, Christian, Armbruster, Thomas, Grew, Edward S., Baronnet, Alain, Leyx, Catherine, Medenbach, Olaf (2014) The triplite–triploidite supergroup: structural modulation in wagnerite, discreditation of magniotriplite, and the new mineral hydroxylwagnerite. European Journal of Mineralogy, 26 (4) 553-565 doi:10.1127/0935-1221/2014/0026-2386
Localities for Magniotriplite
Showing 10 localities.
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 | |
| Lottermoser et al. (1997) |
Kyrgyzstan | |
| [DAN-SSSR (1951) +2 other references |
| Pekov (1998) |
Russia | |
| Trunilina et al. (2024) |
Spain | |
| Roda et al. (2001) |
| Roda et al. (2004) +1 other reference |
| Bareche (2005) |
| & locality references +1 other reference | |
Sweden | |
| |
| Wik et al. (2005) |
Karasu-Karavshinskoye, Turkestan Ridge, Batken Region, Kyrgyzstan