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Keithconnite Mineral Data
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General Keithconnite Information
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 Chemical Formula: |
Pd3-xTe(x=0.14 to 0.43) |
| Composition: |
Molecular Weight = 425.58 gm |
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Tellurium 29.98 % Te |
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Palladium 70.02 % Pd |
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______ |
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100.00 % |
| Empirical Formula: |
Pd2.8Te |
| Environment: |
Cumulate ultra-mafic hosted sulfide mineralization. |
| IMA Status: |
Approved IMA 1979 |
| Locality: |
Stillwater Pt-Pd J-M reef complex, Nye County, Montana, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Keith Conn (1923), U.S. Geologist who investigated the Stillwater Complex, Nye, Montana, USA. |
| Name Pronunciation: |
Keithconnite + Pronunciation  |
| Synonym: |
ICSD 42551 |
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IMA1978-032 |
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PDF 34-1461 |
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Keithconnite Image |
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Images:
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Kotulskite Telluropalladinite Keithconnite
Comments: Polyphase grain of (1) ferroan platinum corroded by (2) Pt(Fe,Cu) and overgrown by (5) telluropalladinite, an unknown (6) Pd-Te-Fe-Si-O phase, (7) Fe-hydroxide and (8) a Ca-Mn-Fe silicate with inclusions of (3) kotulskite and (4) keithconnite. (BGR).
Location: Stream sediments of rivers in the vicinity of the original discovery of the Merensky Reef on the farm Maandagshoek close to Burgersfort in the Eastern Bushveld, South Africa..
Scale: See Image.
© Federal Institute for Geosciences and Natural Resources |
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Keithconnite Crystallography
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| Axial Ratios: |
a:c = 1:0.99563 |
| Cell Dimensions: |
a = 11.45, c = 11.4, Z = 18; V = 1,294.33 Den(Calc)= 9.83 |
| Crystal System: |
Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: R 3 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.26(1), 2.16(0.9), 0.791(0.4),0.885(0.3), 1.32(0.3), 1.4(0.2), 2.22(0.2), |
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Physical Properties of Keithconnite
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| Color: |
Gray white. |
| Diaphaneity: |
Opaque |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
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Optical Properties of Keithconnite
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| RL Anisotrophism: |
Moderate to strong. |
| RL Color: |
Cream colored, dull cream with brownish tint with kotulskite, gray with telluropalladinite. |
| RL Pleochroism: |
Not detectable in air, very slight in oil. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Keithconnite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
40.80 |
40.60 |
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| 420 nm |
41.60 |
41.10 |
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| 440 nm |
41.80 |
41.50 |
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| 460 nm |
42.00 |
42.00 |
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| 480 nm |
42.30 |
42.60 |
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| 500 nm |
42.90 |
43.40 |
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| 520 nm |
43.60 |
44.10 |
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| 540 nm |
44.40 |
44.90 |
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| 560 nm |
45.30 |
45.80 |
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| 580 nm |
46.00 |
46.60 |
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| 600 nm |
46.80 |
47.50 |
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| 620 nm |
48.00 |
48.80 |
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| 640 nm |
49.30 |
49.90 |
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| 660 nm |
50.60 |
50.90 |
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| 680 nm |
52.00 |
52.10 |
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| 700 nm |
53.50 |
53.40 |
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Calculated Relative Intensity Colors of Keithconnite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
| R1 |
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| R2 |
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Calculated Properties of Keithconnite
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| Electron Density: |
Bulk Density (Electron Density)=8.35 gm/cc
note: Specific Gravity of Keithconnite =9.83 gm/cc.
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| Fermion Index: |
Fermion Index = 0.18
Boson Index = 0.82 |
| Photoelectric: |
PEKeithconnite = 280.65 barns/electron
U=PEKeithconnite x rElectron Density=2,344.08 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Keithconnite is Not Radioactive |
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Keithconnite Classification
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| Dana Class: |
02.02.06.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.02)where Am Bn Xp, with (m+n):p=3:1 |
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(02.02.06)Dana Group |
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02.02.06.01 Keithconnite Pd3-xTe(x=0.14to0.43) R 3 3 |
| Strunz Class: |
02.BC.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BC -With Rh, Pd, Pt, etc. |
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02.BC.20 Keithconnite Pd3-xTe(x=0.14to0.43) R 3 3 |
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Other Keithconnite Information
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| References: |
NAME( Dana8) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Keithconnite :
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
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Keithconnite
Pd3-xTe(x=0.14 to 0.43)
Dana No: 02.02.06.01 Strunz No: 02.BC.20
Locality:
Notes:
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