Telargpalite

(Pd,Ag)3Te
IMA status
  • Approved
IMA symbol
Tlp
Discovered
1972
IMA approved
1972
Also known as
  • IMA1972-030
  • Telargpaliet

Where it forms, where it's found

Geological setting

Copper-nickel deposit.

Type locality
Komsomol'skii Mine
  1. Talnakh Cu-Ni Deposit
  2. Norilsk-Talnakh Mining Region
  3. Taimyr Peninsula
  4. Taymyrskiy Autonomous Okrug
  5. Krasnoyarsk Krai
  6. Russia

69.5360°, 88.4622°

19recorded occurrences
Source · OpenStreetMap

Physical

Hardness
123456789102 – 2.5/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond
Transparency
Opaque
Colour
Lead-gray
Density
7.378 g/cm³

Optical

Optical type
Isotropic
Optical colour
Pale gray with lilac tint
Tropism
Isotropic
Reflectance R%
(44.7) 440, (45.3) 460, (46.6) 480, (47.5) 500, (49.1) 520, (50.1) 540, (50.9) 560, (51.7) 580, (52.4) 600, (53.7) 620, (54.7) 640, (55.6) 660, (56.7) 680, (57.2) 700
Reflected-light panel
R̄ 51.2 %isotropic · single curve
Specimen sRGB 255, 174, 90
White reference100 % reflector under same lamp
Reflected colour
Pale gray with lilac tint

Crystallography

Crystal system
Isometric
Cell parameters
a = 12.60(2) Å
Z
16
Type-locality form

Rounded, often elongated grains 5-200 microns in size.

Comment

Point group and space group not determined.

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
47AgSilverSilver3107.868323.604
42.00%
46PdPalladiumPalladium3106.420319.260
41.44%
52TeTelluriumTellurium1127.600127.600
16.56%
Total770.464100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From IMA formula

Impurities
  • Pb
  • Bi
  • Se

Synonyms

  • IMA1972-030
  • Telargpaliet

In other languages

German
IMA 1972-030 · Telargpalit
Italian
Telargpalite

Classification

Strunz
10th ed.

2.BC.45

  • 2Sulfides and SulfosaltsClass
  • 2.BMetal Sulfides, M: S > 1: 1 (mainly 2: 1)Division
  • 2.BCWith Rh, Pd, Pt, etc.Group
  • 2.BC.45TelargpaliteSpecies
Dana
8th ed.

02.01.03.01

  • 02SulfidesClass
  • 02.01AmXp, with m:p > 3:1Type
  • 02.01.03— unnamed intermediate level —Group
  • 02.01.03.01TelargpaliteSpecies
CIM
—

3.12.22

  • 3Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)Class
  • 3.12Sulphides etc. of the platinum metalsGroup
  • 3.12.22TelargpaliteSpecies

Group, growth & confusion

In the same group
2 members

Literature, links & citation

Citations
  1. 1969Khar’kin, V.S., Imanov, R.M., Semiletov, S.A. (1969) The Palladium Telluride Pd4_xTe Crystal Structure. Kristallografiya, 14(5), 907–910. (in Russian)
  2. 1970(1970) Soviet Physics – Crystallography: 14: 779-781.
  3. 1974Kovalenker, V.A., Genkin, A.D., Evstigneeva, T.L., Laputina, I.P. (1974) Telargpalite, a new mineral of palladium, silver and tellurium, from the copper-nickel ores of the Oktyabr deposit. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 103(5), 595-600.
  4. 1975Fleischer, Michael; Chao, G. Y.; Kato, Ikiro (1975) New Mineral Names. American Mineralogist, 60 (5-6). 485-489
  5. 1975Kovalenker, V. A., Genkin, A. D., Yevstigneyeva, T. L., & Laputina, I. P. (1975). Telargpalite, a new mineral of palladium, silver, and tellurium from the copper-nickel ores of the Oktyabr deposit. International Geology Review, 17(7), 817-822
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Telargpalite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/telargpalite-3903},
  note      = {Accessed 2026-05-11}
}