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Aluminomagnesiohulsite

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Formula:
(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2
Colour:
black
Lustre:
Adamantine
Hardness:
6
Specific Gravity:
3.84
Crystal System:
Monoclinic
Name:
In allusion to the dominance of aluminum in the composition and its chemical relationship to Magnesiohulsite.
Aluminium dominant analogue of Magnesiohulsite.


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Classification of AluminomagnesiohulsiteHide

Approved
Approval Year:
2002
6.AB.45

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

Physical Properties of AluminomagnesiohulsiteHide

Adamantine
Colour:
black
Streak:
dark brown
Hardness:
Density:
3.84 g/cm3 (Measured)    

Chemical Properties of AluminomagnesiohulsiteHide

Formula:
(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2
IMA Formula:
Mg2AlO2(BO3)

Crystallography of AluminomagnesiohulsiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 5.334 Å, b = 3.03 Å, c = 10.5 Å
β = 94.46°
Ratio:
a:b:c = 1.76 : 1 : 3.465
Unit Cell V:
169.19 ų (Calculated from Unit Cell)
Twinning:
common

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.24 (50)
2.62 (50)
2.53 (100)
2.00 (55)

Type Occurrence of AluminomagnesiohulsiteHide

General Appearance of Type Material:
minute stubby prisms to 0.1 mm, included in fibrous ludwigite
Geological Setting of Type Material:
in a spinel bearing kotoite marble
Associated Minerals at Type Locality:

Synonyms of AluminomagnesiohulsiteHide

Other Language Names for AluminomagnesiohulsiteHide

Relationship of Aluminomagnesiohulsite to other SpeciesHide

Other Members of this group:
FolvikiteSb5+Mn3+(Mg,Mn2+)10O8(BO3)4Mon. 2 : P2
Hulsite(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2Mon.
Magnesiohulsite(Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2Mon.
Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Mon.

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.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.75Pertsevite-(OH)Mg2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
6.AB.80JacquesdietrichiteCu2(H2BO3)(OH)3Orth. mmm (2/m 2/m 2/m) : Pmna
6.AB.85PainiteCaZrAl9(BO3)O15Hex.

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 AluminomagnesiohulsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pertsev, N.N., et al.: European Journal of Mineraleralogy (2004): 16: 151-161.

Internet Links for AluminomagnesiohulsiteHide

Localities for AluminomagnesiohulsiteHide

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)
      • Verkhoyansk
        • Yana River Basin
          • Dogdo river
N.N. Pertsev et al.: Eur. J. Mineral. 16:151-161 (2004)
  • Northern Region
    • Karelia Republic
      • Ladoga Region
        • Pitkyaranta District (Pitkäranta District)
Lisitsyn, A.Ye., Malinko, S.V. and Rudnev, V.V. (1991) Borates of Pitkyaranta: distribution and composition. Mineralogicheskiy Zhurnal, 13(1), 49-60 (in Russian).
USA
 
  • Alaska
    • Nome Borough
      • Seward Peninsula
Aleksandrov, S. M., & Troneva, M. A. (2009). Composition and genesis of endogenous borates from the Pitkáranta ore field, Karelia. Geochemistry International, 47(9), 914-929.
Mineral and/or Locality  
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