Debattistiite
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About Debattistiite
Luca de Battisti
Formula:
Ag9Hg0.5As6S12Te2
Colour:
Black
Lustre:
Metallic
Hardness:
2 - 2½
Specific Gravity:
5.647 (Calculated)
Crystal System:
Triclinic
Name:
Named by A. Guastoni, L. Bindi, and F. Nestola in 2012 in honor of Luca De Battisti, a systematic mineralogist and expert on the minerals of Lengenbach quarry.
This page provides mineralogical data about Debattistiite.
Classification of Debattistiite
Physical Properties of Debattistiite
Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Gray
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN25=65 - 94 kg/mm2 - Vickers
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
5.647 g/cm3 (Calculated)
Optical Data of Debattistiite
Type:
Anisotropic
Anisotropism:
Strong, brownish to bluish
Reflectivity:
| 471.1nm | R1=27.2% | R2= 34.5% |
| 548.3nm | R1=25.5% | R2= 31.0% |
| 586.6nm | R1=22.9% | R2= 28.4% |
| 652.3nm | R1=20.1% | R2= 25.2% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 34.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Dark gray
Pleochroism:
Weak
Comments:
Dark gray to greenish gray
Chemical Properties of Debattistiite
Formula:
Ag9Hg0.5As6S12Te2
IMA Formula:
Ag9Hg0.5As6S12Te2
Crystallography of Debattistiite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.832(5) Å, b = 8.606(4) Å, c = 10.755(5) Å
α = 95.563(9)°, β = 95.880(5)°, γ = 116.79(4)°
α = 95.563(9)°, β = 95.880(5)°, γ = 116.79(4)°
Ratio:
a:b:c = 0.91 : 1 : 1.25
Unit Cell V:
635.28 ų (Calculated from Unit Cell)
Morphology:
Tabular well-formed crystals.
Comment:
New structure type
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.56Å | (100) |
| 7.582Å | (4) |
| 5.736Å | (3) |
| 4.038Å | (3) |
| 3.367Å | (3) |
| 3.301Å | (4) |
| 2.742Å | (7) |
| 2.733Å | (7) |
Type Occurrence of Debattistiite
Place of Conservation of Type Material:
Museum of Mineralogy of the Department of Geosciences at the University of Padova, Italy, catalogue number MMP M10680
Associated Minerals at Type Locality:
Synonyms of Debattistiite
Common Associates
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 Debattistiite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Guastoni, A., Bindi, L., Nestola, F. (2012) Debattistiite, Ag9Hg0.5As6S12Te2, a new Te-bearing sulfosalt from Lengenbach quarry, Binn valley, Switzerland: description and crystal structure. Mineralogical Magazine: 76: 743-750.
Williams, P.A., Hatert, F., Pasero, M., Mills, S.J. (2012) IMA Commission on New Minerals, Nomenclature and classification (CNMNC) Newsletter 13, New minerals and nomenclature modifications approved in 2012. Mineralogical Magazine: 76: 807-817.
Belakovskiy, D.I., Gagne, O.C. (2015) New mineral names. American Mineralogist: 100: 1649-1654.
Internet Links for Debattistiite
mindat.org URL:
https://www.mindat.org/min-42726.html
Please feel free to link to this page.
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External Links:
Mineral Dealers:
Localities for Debattistiite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Switzerland (TL) | |
| Guastoni, A., Bindi, L. and Nestola, F. (2012) Debattistiite, IMA 2011- 098. CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817; De Battisti, L. (2013): Debattistiit, Ag9Hg0.5As6S12Te2 – ein neues Tellur-Sulfosalz aus dem Lengenbach. Schweizer Strahler, 47 (4), 29-30. |
Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland