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Pertsevite-(OH)

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About Pertsevite-(OH)Hide

Formula:
Mg2(BO3)(OH)
Colour:
colorless or have a light brown hue
Lustre:
Vitreous
Hardness:
5½ - 6½
Specific Gravity:
3.156 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for the hydroxyl dominant pertsevite.
The OH-analogue of pertsevite-(F).


Classification of Pertsevite-(OH)Hide

Approved
Approval Year:
2009
First Published:
2008
6.AB.75

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
25.1.6.2

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates

Physical Properties of Pertsevite-(OH)Hide

Vitreous
Colour:
colorless or have a light brown hue
Hardness:
5½ - 6½ on Mohs scale
Hardness:
VHN50=290 - 339 kg/mm2 - Vickers
Cleavage:
Imperfect/Fair
Fracture:
Conchoidal
Density:
3.156 g/cm3 (Calculated)

Optical Data of Pertsevite-(OH)Hide

Type:
Biaxial
RI values:
nα = 1.611(1) nβ = 1.623(1) nγ = 1.644(1)
2V:
Measured: 55° to 65°, Calculated: 75°
Max Birefringence:
δ = 0.033
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Pertsevite-(OH)Hide

Formula:
Mg2(BO3)(OH)

Crystallography of Pertsevite-(OH)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 20.494(3) Å, b = 11.890(2) Å, c = 4.5880(6) Å
Ratio:
a:b:c = 1.724 : 1 : 0.386
Unit Cell V:
1,117.97 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.748 (65)
2.478 (41)
2.417 (39)
2.244 (88)
2.237 (42)
1.713 (100)
1.710 (45)
1.481 (50)

Type Occurrence of Pertsevite-(OH)Hide

General Appearance of Type Material:
fractured grains up to 1 mm in size in a ludwigite-kotoite magnesian skarn
Place of Conservation of Type Material:
sample number 3755/1 (Fersman Mineralogical Museum, Moscow, collection N.N. Pertsev, author’s number B-814)
Geological Setting of Type Material:
ludwigite-kotoite magnesian skarn
Associated Minerals at Type Locality:

Synonyms of Pertsevite-(OH)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Kotoite2 photos of Pertsevite-(OH) associated with Kotoite on mindat.org.
Ludwigite2 photos of Pertsevite-(OH) associated with Ludwigite on mindat.org.
Pertsevite-(F)2 photos of Pertsevite-(OH) associated with Pertsevite-(F) on mindat.org.
Szaibélyite1 photo of Pertsevite-(OH) associated with Szaibélyite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

6.AB.05HambergiteBe2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pbca
6.AB.10BerboriteBe2(BO3)(OH,F) · H2OTrig.
6.AB.15JeremejeviteAl6(BO3)5(F,OH)3Hex. 6/m : P63/m
6.AB.20Warwickite(Mg,Ti,Fe,Cr,Al)2O(BO3)Orth.
6.AB.20YuanfuliiteMg(Fe3+,Al)O(BO3)Orth.
6.AB.25KarliteMg7(BO3)3(OH,Cl)5Orth.
6.AB.30Azoproite(Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2Orth.
6.AB.30BonaccorditeNi2Fe3+(BO3)O2Orth.
6.AB.30FredrikssoniteMg2(Mn3+,Fe3+)(BO3)O2Orth.
6.AB.30LudwigiteMg2Fe3+(BO3)O2Orth.
6.AB.30VonseniteFe2+2Fe3+(BO3)O2Orth.
6.AB.35Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Mon.
6.AB.40BlatteriteSb5+(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32Orth. mmm (2/m 2/m 2/m) : Pnnm
6.AB.40ChestermaniteMg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2Orth.
6.AB.40Orthopinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Orth.
6.AB.40Takéuchiite(Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2Orth.
6.AB.45Hulsite(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2Mon.
6.AB.45Magnesiohulsite(Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2Mon.
6.AB.45Aluminomagnesiohulsite(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2Mon. 2/m
6.AB.50FluoboriteMg3(BO3)(F,OH)3Hex.
6.AB.50HydroxylboriteMg3(BO3)(OH)3Hex. 6/m : P63/m
6.AB.55ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
6.AB.55WightmaniteMg5(BO3)O(OH)5 · 2H2OMon.
6.AB.60GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3Hex.
6.AB.65SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2ClIso. m3m (4/m 3 2/m) : Fd3m
6.AB.70HarkeriteCa12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2OTrig. 3m (3 2/m) : R3m
6.AB.75Pertsevite-(F)Mg2(BO3)(F,OH)Orth. mm2 : Pna21
6.AB.80JacquesdietrichiteCu2(H2BO3)(OH)3Orth. mmm (2/m 2/m 2/m) : Pmna
6.AB.85PainiteCaZrAl9(BO3)O15Hex.

Related Minerals - Dana Grouping (8th Ed.)Hide

25.1.6.1OlshanskyiteCa2[B3O3(OH)6](OH) · 3H2O

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Pertsevite-(OH)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Galuskina, I.O., Kadiyski, M., Armbruster, T., Galuskin, E.V., Pertsev, N.N., Dzierzanowski, P., Wrzalik, R. (2008) A new natural phase in the system Mg2SiO4-Mg2BO3F-Mg2BO3(OH): composition, paragenesis and structure of OH-dominant pertsevite. European Journal of Mineralogy: 20: 951-964.
Galuskina, I.O., Ottolini, L., Kadiyski, M., Armbruster, T., Galuskin, E.V., Dzierżanowski, P., Winiarski, A. (2010) Pertsevite-(OH), a new mineral in the pertsevite series, Mg2(BO3)1–x(SiO4)x(F,OH)1–x (x< 0.5), from the Snezhnoye deposit in Sakha-Yakutia Republic, Russia. American Mineralogist: 95(7): 953-958.

Internet Links for Pertsevite-(OH)Hide

Localities for Pertsevite-(OH)Hide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Eastern-Siberian Region
    • Sakha Republic (Yakutia)
      • Polar Yakutia
        • Dogdo River Basin
          • Tas-Khayakhtakh Range
            • Titovskoe B deposit
              • Izvestkovyi Stream
Galuskina I.O., Kadiyski M., Armbruster T., Galuskin E.V., Pertsev N.N., Dzierzanowski P., Wrzalik R. (2008) A new natural phase in the system Mg2SiO4-Mg2BO3F-Mg2BO3(OH): composition, paragenesis and structure of OH-dominant pertsevite, - Eur. J. Mineral., 20, p. 951-964; Gałuskina, I., Ottolini, L., Kadiyski, M., Armbruster, T., Gałuskin, E.V., Dzierżanowski, P., Winiarski, A. (2010): Pertsevite-(OH), a new mineral in the pertsevite series, Mg2(BO3)1-x(SiO4)x(F,OH)1-x (x < 0.5), from the Snezhnoye deposit in Sakha-Yakutia Republic, Russia. American Mineralogist, 95:953-958
  • Far-Eastern Region
    • Khabarovskiy Kray
      • Dzhugdzhur Ridge
Galuskina, I. O., Kadiyski, M., Armbruster, T., Galuskin, E. V., Pertsev, N. N., Dzierzanowski, P., & Wrzalik, R. (2008). A new natural phase in the system Mg2SiO4Mg2BO3FMg2BO3 (OH): composition, paragenesis and structure of OH-dominant pertsevite. European Journal of Mineralogy, 20(5), 951-964.
USA
 
  • Alaska
    • Nome Borough
      • Seward Peninsula
Aleksandrov, S.M. (2007) Endogenous transformations of kotoite in calciphyres at magnesian- skarn deposits of boron. Geochemistry International, 45, 666–684.
Mineral and/or Locality  
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