Mineralogy Database

Hemloite Mineral Data

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General Hemloite Information

Help on Chemical  Formula: Chemical Formula: (As,Sb)2(Ti,V,Fe,Al)12O23OH
Help on Composition: Composition: Molecular Weight = 1,050.40 gm
   Titanium  27.35 %  Ti   45.63 % TiO2
   Aluminum   2.57 %  Al    4.85 % Al2O3
   Vanadium  14.55 %  V    25.97 % V2O5
   Iron      10.63 %  Fe   13.68 % FeO
   Antimony   2.90 %  Sb    3.47 % Sb2O3
   Arsenic    5.35 %  As    7.06 % As2O3
   Hydrogen   0.10 %  H     0.86 % H2O
   Oxygen    36.56 %  O
            ______        ______ 
            100.00 %      101.52 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: As0.75Sb0.25Ti6V5+3Fe2+2AlO23(OH)
Help on Environment: Environment: In a hydrothermal gold deposit.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Hemlo gold deposit, Page-Williams mine, 3 km east of Hemlo, Thunder Bay district, Ontario, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Hemloite Say HEMLOITE
Help on Synonym: Synonym: ICSD 203124
  IMA1987-015
  PDF 46-1317
 

Hemloite Image

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  Hemloite

Comments: Coarse composite grain of hemloite surrounding rutile, with some alteration to titanite. The white grains are pyrite. (CanMin, v27:427).
Location: Drill core samples from the Hemlo gold deposit, Hemlo, Ontario, Canada. Scale: See Image.
© Canadian Mineralogist

Hemloite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4767:1:0.4518
Help on Cell Dimensions: Cell Dimensions: a = 7.552, b = 15.842, c = 7.158, Z = 2; alpha = 78.36°, beta = 84.97°, gamma = 86.78° V = 834.21 Den(Calc)= 4.18
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.924(1), 2.665(0.9), 2.722(0.9),
 

Physical Properties of Hemloite

Help on Cleavage: Cleavage: None
Help on Color: Color: Black, Dark gray, Dark brown.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: black
 

Optical Properties of Hemloite

Help on Optical Data: Optical Data: Biaxial (?)
  NCalc= 2.38 - from Gladstone-Dale relationship (KC = 0.3299) where Ncalc=Dcalc*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Very weak, dark gray to dark brown.
Help on RL Color: RL Color: Gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hemloite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   18.90   20.50 
   
 420 nm   18.60   19.80 
 440 nm   18.20   19.10 
 460 nm   17.80   18.70 
 480 nm   17.60   18.40 
 500 nm   17.40   18.20 
 520 nm   17.20   18.00 
 540 nm   17.10   17.80 
 560 nm   17.00   17.70 
 580 nm   17.00   17.60 
 600 nm   16.90   17.50 
 620 nm   16.90   17.40 
 640 nm   16.80   17.40 
 660 nm   16.80   17.30 
 680 nm   16.80   17.30 
 700 nm   16.80   17.20 
Calculated Relative Intensity Colors of Hemloite in Air
Relative
Intensity
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 520%
R1                      
R2                      
 

Calculated Properties of Hemloite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.95 gm/cc
note: Specific Gravity of Hemloite =4.18 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEHemloite = 23.45 barns/electron
U=PEHemloite x rElectron Density= 92.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hemloite is Not Radioactive
 

Hemloite Classification

Help on  Dana Class: Dana Class: 46.02.04.01 (46)Basic or Halogen-Containing Antimonites, Arsenites and Phosphites
  (46.02)with miscellaneous formulae
  (46.02.04)Dana Group
 
46.02.04.01 Hemloite (As,Sb)2(Ti,V,Fe,Al)12O23OH P1 1
Help on  Strunz Class: Strunz Class: 04.JB.60 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JB -Arsenites, antimonites, bismuthites; with additional anions, without H2O
 
04.JB.60 Hemloite (As,Sb)2(Ti,V,Fe,Al)12O23OH P1 1
 

Other Hemloite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.75,p1432,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Hemloite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Hemloite Specimen Label here :

Hemloite

(As,Sb)2(Ti,V,Fe,Al)12O23OH
Dana No: 46.02.04.01 Strunz No: 04.JB.60
Locality:

 

Notes:

 

 
   
 


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