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Radhakrishnaite

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Formula:
PbTe3(Cl,S)2
System:
Tetragonal
Colour:
Brownish gray
Name:
Named after Bangalore Puttaiya Radhakrishnan(30 April 1918 Bangalore - 26 January 2012), Director, Mysore Geological Department.



Classification of Radhakrishnaite

Approved
3.AA.50

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
2.15.4.1

2 : SULFIDES
15 : Chlor-sulfides
6.5.10

6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
5 : Sulphohalides

Type Occurrence of Radhakrishnaite

General Appearance of Type Material:
intergrown as 20-40 micron aggregates that replace altaite inclusions in galena
Place of Conservation of Type Material:
Mineralogical Museum of Academy of Sciences of the USSR and in the Mineragraphy Laboratory of IGEM, Academy of Sciences of the USSR, both in Moscow
Geological Setting of Type Material:
hydrothermal gold deposit
Associated Minerals at Type Locality:

Physical Properties of Radhakrishnaite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Brownish gray
Density:
8.89 g/cm3 (Calculated)

Crystallography of Radhakrishnaite

Crystal System:
Tetragonal
Cell Parameters:
a = 5.71(5) Å, c = 3.77(5) Å
Ratio:
a:c = 1 : 0.66
Unit Cell Volume:
V 122.92 ų (Calculated from Unit Cell)
Z:
1
Comment:
P4/m, P4, P-4, P422, P4mm, P42m or P4m2 and P4/mmm

Optical Data of Radhakrishnaite

Type:
Isotropic
Colour in reflected light:
gray

Chemical Properties of Radhakrishnaite

Formula:
PbTe3(Cl,S)2
All elements listed in formula:

Relationship of Radhakrishnaite to other Species

3.AA.05MarshiteCuI
3.AA.05Miersite(Ag,Cu)I
3.AA.05NantokiteCuCl
3.AA.05UM1999-11:I:CuSCu(I,S)
3.AA.10IodargyriteAgI
3.AA.10Tocornalite(Ag,Hg)I
3.AA.15BromargyriteAgBr
3.AA.15ChlorargyriteAgCl
3.AA.20CarobbiiteKF
3.AA.20GriceiteLiF
3.AA.20HaliteNaCl
3.AA.20SylviteKCl
3.AA.20VilliaumiteNaF
3.AA.25SalammoniacNH4Cl
3.AA.25UM1998-03-Cl:TlTlCl
3.AA.25LafossaiteTl(Cl,Br)
3.AA.30Calomel(Hg2)2+Cl2
3.AA.30Kuzminite(Hg22+)(Br,Cl)2
3.AA.30Moschelite(Hg22+)I2
3.AA.35NeighboriteNaMgF3
3.AA.40ChlorocalciteKCaCl3
3.AA.45KolaritePbTeCl2
3.AA.55ChallacolloiteKPb2Cl5
3.AA.60HephaistositeTlPb2Cl5
6.5.1CorderoiteHg32+S2Cl2
6.5.2ArzakiteHg32+S2(Br,Cl)2
6.5.3LavrentieviteHg32+S2(Cl,Br)2
6.5.4GrechishcheviteHg32+S2(Br,Cl,I)2
6.5.5RadtkeiteHg32+S2ICl
6.5.6CapgaronniteAgHgClS
6.5.7PerrouditeHg5Ag4S5(I,Br)2Cl2
6.5.8ArdaitePb19Sb13S35Cl7
6.5.9DadsonitePb23Sb25S60Cl
6.5.11DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
6.5.12ThalfenisiteTl6(Fe,Ni,Cu)25S26Cl

Other Names for Radhakrishnaite

Name in Other Languages:
Simplified Chinese:硫碲铅矿

Other Information

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 Radhakrishnaite

Reference List:
Genkin A D, Safonov Y G, Vasudev V N, Rao B K, Boronikhin V A, Vyalsov L N, Gorshkov A I, Mokhov A V (1985) Kolarite PbTeCl2 and radhakrishnaite PbTe3(Cl,S)2, new mineral species from the Kolar Gold Deposit, India. The Canadian Mineralogist 23, 501-506

Hawthorne F C, Bladh K W, Burke E A J, Ercit S, Grew E S, Grice J D, Puziewicz J, Roberts A C, Schedler R A, Shigley J E (1986) New mineral names. American Mineralogist (1986): 71: 1545-1546.

Internet Links for Radhakrishnaite

mindat.org URL:
http://www.mindat.org/min-3349.html
Please feel free to link to this page.

Localities for Radhakrishnaite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
China
 
  • Hebei Province
    • Zhangjiakou Prefecture
      • Chongli Co.
        • Dongping Au-Te ore field
Minzhi Yang (2006): Contributions to Geology and Mineral Resources Research 21(1), 1-9
India (TL)
 
  • Karnataka
    • Kolar District
      • Kolar Gold Fields
        • Central Schist Belt
Genkin A D, Safonov Y G, Vasudev V N, Rao B K, Boronikhin V A, Vyalsov L N, Gorshkov A I, Mokhov A V (1985) Kolarite PbTeCl2 and radhakrishnaite PbTe3(Cl,S)2, new mineral species from the Kolar Gold Deposit, India, The Canadian Mineralogist, 23, 501-506
Mineral and/or Locality  
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