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Criddleite

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Dr Alan J Criddle (1944-2002)
Formula:
TlAg2Au3Sb10S10
Colour:
Gray-blue
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
6.86
Crystal System:
Monoclinic
Name:
Named by D.C. Harris, A.C. Roberts, J.H.G. Laflamme, and C.J. Stanley in 1988 in honor of Dr Alan J. Criddle (1944, South Wales, UK - 2 May 2002), mineralogist at the British Museum (Natural History) for his 'substantial contributions to the quantitative reflectance of ore minerals and for his research on opaque minerals. He helped to describe more than 65 new minerals and was author of the Quantitative Data File (QDF) for Ore Minerals (2nd and 3rd editions).
This page provides mineralogical data about Criddleite.


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Classification of CriddleiteHide

Approved
Approval Year:
1987
First Published:
1988
2.LA.25

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
3.9.1.1

3 : SULFOSALTS
9 : ø = 1
5.5.19

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of Tl

Pronounciation of CriddleiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of CriddleiteHide

Metallic
Transparency:
Opaque
Colour:
Gray-blue
Streak:
Black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN25=94 - 129 kg/mm2 - Vickers
Density:
6.86(7) g/cm3 (Measured)    6.57 g/cm3 (Calculated)

Optical Data of CriddleiteHide

Type:
Anisotropic
Anisotropism:
Distinct - from buff to slate gray
Colour in reflected light:
Gray-blue
Pleochroism:
Weak
Comments:
From gray-blue to slightly greenish gray-blue

Chemical Properties of CriddleiteHide

Formula:
TlAg2Au3Sb10S10
IMA Formula:
Ag2Au3TlSb10S10

Crystallography of CriddleiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 20.01 Å, b = 8.07 Å, c = 7.83 Å
β = 92.01°
Ratio:
a:b:c = 2.48 : 1 : 0.97
Unit Cell V:
1264.9 ų
Morphology:
Lath like grains to 70 microns.
Twinning:
Common

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.63 (90)
3.91 (50)
3.456 (50)
2.860 (70)
2.813 (100)
2.018 (60)
1.959 (70)

Type Occurrence of CriddleiteHide

Place of Conservation of Type Material:
British Museum (Natural History) as polished section E.1230, BM 1987,351.

Systematic Reference Series of the National Mineral Collection, housed at the Geological Survey of Canada, Ottawa, Ontario, Canada as a polished section, and as drill core specim
Geological Setting of Type Material:
Primary hydrothermal mineral
Associated Minerals at Type Locality:

Synonyms of CriddleiteHide

Other Language Names for CriddleiteHide

German:Criddleit
Simplified Chinese:硫锑金银铊矿
Spanish:Criddleita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Aurostibite1 photo of Criddleite associated with Aurostibite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.LA.10DervilliteAg2AsS2Mon. 2/m : P2/b
2.LA.15DaomaniteCuPtAsS2Orth.
2.LA.20VaughaniteTlHgSb4S7Tric.
2.LA.30Fettelite[Ag6As2S7][Ag10HgAs2S8] Mon. 2 : B2
2.LA.35Chaméanite(Cu,Fe)4As(Se,S)4Iso.
2.LA.40ArcubisiteAg6CuBiS4
2.LA.45MgriiteCu3AsSe3
2.LA.50Benleonardite[Ag6(Sb,As)2S6Te] [Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1
2.LA.55TsnigriiteAg9SbTe3(S,Se)3Mon.
2.LA.60BorovskitePd3SbTe4Iso.
2.LA.65JonassoniteAuBi5S4Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.5.1LoránditeTlAsS2Mon. 2/m : P21/b
5.5.2EllisiteTl3AsS3Trig. 3m : R3m
5.5.3ImhofiteTl5.8As15.4S26Mon. 2/m
5.5.4SimoniteTlHgAs3S6Mon. 2/m
5.5.6ChristiteTlHgAsS3Mon. 2/m
5.5.6RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6Tet. 4 2m : I4 2m
5.5.7HutchinsoniteTlPbAs5S9Orth.
5.5.8Wallisite(Cu,Ag)TlPbAs2S5Tric.
5.5.9BernarditeTlAs5S8Mon. 2/m : P21/b
5.5.10VrbaiteHg3Tl4As8Sb2S20Orth. mmm (2/m 2/m 2/m) : Cmca
5.5.11RebuliteTl5Sb5As8S22Mon. 2/m : P21/b
5.5.12GillulyiteTl2(As,Sb)8S13Mon.
5.5.13WeissbergiteTlSbS2Tric. 1 : P1
5.5.14Rohaite(Tl,Pb,K)2Cu8.7Sb2S4Orth.
5.5.15VaughaniteTlHgSb4S7Tric.
5.5.16ChalcothalliteTl2(Cu,Fe)6SbS4Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
5.5.17PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
5.5.18ParapierrotiteTlSb5S8Mon. m
5.5.20ChabournéiteTl4Pb2(Sb,As)20S34Tric. 1 : P1

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 CriddleiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Harris, D.C., Roberts, A.C., Laflamme, J.H.G., Stanley, C.J. (1988) Criddleite, TlAg2Au3Sb10S10, a new gold-bearing mineral from Hemlo, Ontario, Canada. Mineralogical Magazine: 52: 691-697.
Harris, D.C. (1989) The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geological Survey of Canada, Economic Geology Report 38.
Jambor, J.L., Vanko, D.A. (1990) New mineral names. American Mineralogist: 75: 706-713.

Internet Links for CriddleiteHide

Localities for CriddleiteHide

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., ROBERTS, A.C., LAFLAMME, J.H.G. & STANLEY, C.J. (1988): Criddleite, TlAg2Au3Sb10S10, a new gold-bearing mineral from Hemlo, Ontario, Canada. Mineralogical Magazine 52, 691-697. 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., ROBERTS, A.C., LAFLAMME, J.H.G. & STANLEY, C.J. (1988): Criddleite, TlAg2Au3Sb10S10, a new gold-bearing mineral from Hemlo, Ontario, Canada. Mineralogical Magazine 52, 691-697. 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., ROBERTS, A.C., LAFLAMME, J.H.G. & STANLEY, C.J. (1988): Criddleite, TlAg2Au3Sb10S10, a new gold-bearing mineral from Hemlo, Ontario, Canada. Mineralogical Magazine 52, 691-697. HARRIS, D.C. (1989): The mineralogy and geochemistry of the Hemlo gold deposit, Ontario. Geological Survey of Canada, Economic Geology Report 38.
France
 
  • Nouvelle-Aquitaine
    • Creuse
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