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Hemloite

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Formula:
(Ti,V3+,Fe3+,Al)12(As3+,Sb3+)2O23(OH)
Hardness:
Crystal System:
Triclinic
Name:
Named for the type locality, the Hemlo gold deposit, 35 km east of Marathon, Ontario, Canada.
subhedral to anhedral grains up to 400 x 600 microns in size


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Classification of HemloiteHide

Approved
4.JB.60

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
B : Arsenites, antimonites, bismuthites; with additional anions, without H2O
46.2.4.1

46 : ANTIMONITES AND ARSENITES CONTAINING HYDROXYL OR HALOGEN
2 : Miscellaneous
24.3.3

24 : Antimonates and Antimonites
3 : Antimonates of Ti and Pb

Physical Properties of HemloiteHide

Hardness:
6½ on Mohs scale

Chemical Properties of HemloiteHide

Formula:
(Ti,V3+,Fe3+,Al)12(As3+,Sb3+)2O23(OH)
IMA Formula:
(Ti,V3+,Fe3+,Al)12As3+2O23(OH)
Common Impurities:
Al

Crystallography of HemloiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.552 Å, b = 15.842 Å, c = 7.158 Å
α = 78.36°, β = 84.97°, γ = 86.78°
Ratio:
a:b:c = 0.477 : 1 : 0.452
Unit Cell V:
834.88 ų (Calculated from Unit Cell)

Type Occurrence of HemloiteHide

Place of Conservation of Type Material:
The British Museum, London, specimen BM 1986, 512, polished section E.1210 and as drill core and polished sections in the Systematic Reference Series of the National Mineral Collection, Geological Survey of Canada, Ottawa, catalogue number NMC 65544.

Synonyms of HemloiteHide

Other Language Names for HemloiteHide

German:Hemloit
Russian:Эмлоит
Spanish:Hemloita

Related Minerals - Nickel-Strunz GroupingHide

4.JB.05Fetiasite(Fe3+,Fe2+,Ti)3(As2O5)O2Mon.
4.JB.10ManganarsiteMn3(As2O4)(OH)4
4.JB.15MagnussoniteMn10As6O18(OH,Cl)2Iso. m3m (4/m 3 2/m) : Ia3d
4.JB.15UM1984-09-AsO:ClHMnMn10As6O18(OH)ClTet. 4/mmm (4/m 2/m 2/m) : I41/acd
4.JB.20ArmangiteMn2+26(AsO3)14(HAsO3)4(CO3)Trig. 3 : P3
4.JB.25NanlingiteNa(Ca5Li)Mg12(AsO3)2[Fe(AsO3)6]F14Trig.
4.JB.30AsbecasiteCa3(Ti,Sn4+)Be2(AsO3)6(SiO4)2Trig. 3m : P3c1
4.JB.35StenhuggariteCaFeSb(AsO3)2OTet.
4.JB.40TrigonitePb3Mn2+(AsO3)2(HAsO3)Mon. m
4.JB.45FinnemanitePb5(AsO3)3ClHex. 6/m : P63/m
4.JB.50GebharditePb8(As2O5)2OCl6Mon.
4.JB.55DerbyliteFe3+4Ti3Sb3+O13(OH)Mon. 2/m : P21/m
4.JB.55Tomichite(V,Fe)4Ti3AsO13(OH)Mon.
4.JB.55Graeserite(Fe3+ ,Ti)4Ti3AsO13(OH)Mon.
4.JB.65FreediteCu+Pb8(AsO3)2O3Cl5Mon. 2/m : B2/m
4.JB.70GeorgiadèsitePb4(AsO3)Cl4(OH)Mon.
4.JB.75Ekatite(Fe3+,Fe2+,Zn)12(AsO3)6(AsO3,HSiO4)2(OH)6Hex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

24.3.2DerbyliteFe3+4Ti3Sb3+O13(OH)Mon. 2/m : P21/m
24.3.4NadoritePbSbClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
24.3.5BindheimitePb2Sb2O6OIso. m3m (4/m 3 2/m) : Fd3m
24.3.6MonimoliteIso. m3m (4/m 3 2/m)
24.3.7ThorikositePb3Cl2(OH)(SbO3,AsO3)Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm

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 HemloiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
HARRIS, D.C., HOSKINS, B.F., GREY, I.E., CRIDDLE, A.J. & STANLEY, C.J. (1989): Hemloite, (As,Sb)2(Ti,V,Fe,Al)12O23OH: a new mineral from the Hemlo gold deposit, Hemlo, Ontario, and its crystal structure. Canadian Mineralogist 27, 427-440.
HARRIS, D.C. (1989): The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geological Survey of Canada, Economic Geology Report 38.

Internet Links for HemloiteHide

Localities for HemloiteHide

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.
Canada
 
  • Ontario
    • Thunder Bay District
      • Bomby Township
HARRIS, D.C., HOSKINS, B.F., GREY, I.E., CRIDDLE, A.J. & STANLEY, C.J. (1989): Hemloite, (As,Sb)2(Ti,V,Fe,Al)12O23OH: a new mineral from the Hemlo gold deposit, Hemlo, Ontario, and its crystal structure. Canadian Mineralogist 27, 427-440. HARRIS, D.C. (1989): The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geological Survey of Canada, Economic Geology Report 38.
HARRIS, D.C., HOSKINS, B.F., GREY, I.E., CRIDDLE, A.J. & STANLEY, C.J. (1989): Hemloite, (As,Sb)2(Ti,V,Fe,Al)12O23OH: a new mineral from the Hemlo gold deposit, Hemlo, Ontario, and its crystal structure. Canadian Mineralogist 27, 427-440. HARRIS, D.C. (1989): The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geological Survey of Canada, Economic Geology Report 38.
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