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Tocornalite Mineral Data
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General Tocornalite Information
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 Chemical Formula: |
(Ag,Hg)I (?) |
| Composition: |
Molecular Weight = 257.95 gm |
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Silver 31.36 % Ag 33.69 % Ag2O |
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Mercury 19.44 % Hg 20.22 % Hg2O |
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Iodine 49.20 % I 49.20 % I |
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- %
I -3.10 % -O=I2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ag0.75Hg0.25I |
| Environment: |
Found with other halides of silver and mercury. A questionable species. |
| IMA Status: |
Valid Species (Pre-IMA) 1867 |
| Locality: |
Chanarcillo, Atacama, Chile. Link to MinDat.org Location Data. |
| Name Origin: |
Named in 1867 for S. F. Tocornal, rector of the University of Santiago, Chile. |
| Name Pronunciation: |
Tocornalite + Pronunciation  |
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Tocornalite Image |
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Images:
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Tocornalite
Comments: Pale yellow granular tocornalite in matrix.
Location: Block 14 Opencut, Broken Hill, Yancowinna Co., New South Wales, Australia.
Scale: See Image.
© Rruff Database |
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Tocornalite Crystallography
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| Crystal System: |
Hexagonal Space Group: Hex ? |
| X Ray Diffraction: |
By Intensity(I/Io): 2.644(1), 3.61(0.9), 3.76(0.9), |
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Physical Properties of Tocornalite
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| Color: |
Yellow, Bright yellow, Gray green, Black. |
| Fracture: |
Plastic - Deforms like soft, plastic materials. |
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
| Luster: |
Earthy (Dull) |
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Optical Properties of Tocornalite
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| Optical Data: |
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Calculated Properties of Tocornalite
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PETocornalite = 610.33 barns/electron
U=PETocornalite x rElectron Density= . barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tocornalite is Not Radioactive |
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Tocornalite Classification
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| Dana Class: |
09.01.06.01 (09)Anhydrous and Hydrated Halides |
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(09.01)where A X |
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(09.01.06)Dana Group |
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09.01.06.01 Tocornalite (Ag,Hg)I(?) Hex ? Hex |
| Strunz Class: |
03.AA.10 03 - HALIDES |
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03.A - Simple Halides, Without H2O |
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03.AA -M:X = 1:1, 2:3, 3:5, etc. |
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03.AA.10 Iodargyrite AgI P 63mc 6mm |
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03.AA.10 Tocornalite (Ag,Hg)I(?) Hex ? Hex |
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Other Tocornalite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) |
| See Also: |
Links to other databases for Tocornalite :
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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Print or Cut-and-Paste your Tocornalite Specimen Label here :
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Tocornalite
(Ag,Hg)I (?)
Dana No: 09.01.06.01 Strunz No: 03.AA.10
Locality:
Notes:
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