Mazzettiite Mineral Data (original) (raw)
General Mazzettiite Information
Chemical Formula:
Ag3HgPbSbTe5
Composition:
Molecular Weight = 1,493.72 gm
Silver 21.59 % Ag
Mercury 13.56 % Hg
Antimony 8.07 % Sb
Tellurium 42.63 % Te
Lead 14.15 % Pb
______
100.00 %
Empirical Formula:
Ag2.99Hg1.01Pb1.02Sb0.99Te4.99
Environment:
Closely associated with altaite together with galena in a gangue of quartz. Strong similarities with petrovicite
IMA Status:
Approved IMA 2004 (Dana # Added)
Locality:
Findlay Gulch, Saguache Co., Colorado, USA Link to MinDat.org Location Data.
Name Origin:
Named for Giuseppe Mazzetti (1942�2003), curator in chief of the Mineralogy Section of the Museo di Storia Naturale, Universit� di Firenze.
Synonym:
IMA2004-003
Mazzettiite Image
Images:
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Mazzettiite Comments: Back-scattered electron photograph (SEM) of mazzettiite (M), associated with altaite (A), galena (G) and quartz (Q). Location: Museum specimen in the Mineralogical Collection of the Institut royal des Sciences naturelles de Belgique, Bruxelles (Belgium). Findlay Gulch, Saguache Co., Colorado, USA.Scale: See Image. © Canadian Mineralogist |
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Mazzettiite Crystallography
Axial Ratios:
a:b:c =1.1173:1:0.3052
Cell Dimensions:
a = 16.495, b = 14.762, c = 4.506, Z = 4; V = 1,097.21 Den(Calc)= 9.04
Crystal System:
OrthorhombicSpace Group: P na21 or Pnam
X Ray Diffraction:
By Intensity(I/Io): 3.01(1)(520), 2.754(0.6)(440), 3.17(0.6)(430),3.65(0.6)(330), 1.806(0.55)(561), 2.137(0.5), 3.26(0.5)(131), 2.317(0.45)(122), 3.6(0.4),
Physical Properties of Mazzettiite
Cleavage:
None
Color:
Light gray.
Diaphaneity:
Opaque
Habit:
Anhedral Grains - Granular minerals without the expression of crystal shapes
Habit:
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Hardness:
3-3.5 - Calcite-Copper Penny
Luster:
Metallic
Streak:
black
Optical Properties of Mazzettiite
Optical Data:
NCalc= 2.5 - from Gladstone-Dale relationship (KC = 0.1664) where Ncalc=Dcalc*KC+1
RL Anisotrophism:
Moderate.
RL Bireflectance:
Weakly to moderately.
RL Color:
Light gray with no internal reflections.
RL Pleochroism:
Weakly from slightly greenish gray to darker greenish gray.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Mazzettiite in Air
| λ | R1 | R 2 |  |
∑ R1(λ) | ∑ R2(λ) |
|---|---|---|---|---|---|
| 400 nm | 45.10 | 45.40 |  |
||
| 420 nm | 45.20 | 45.70 |  |
||
| 440 nm | 45.40 | 45.90 |  |
||
| 460 nm | 45.60 | 46.10 |  |
||
| 470 nm | 45.60 | 46.10 |  |
||
| 480 nm | 45.90 | 46.30 |  |
||
| 500 nm | 45.90 | 46.40 |  |
||
| 520 nm | 46.00 | 46.40 |  |
||
| 540 nm | 46.00 | 46.50 |  |
||
| 546 nm | 46.10 | 46.60 |  |
||
| 560 nm | 46.20 | 46.60 |  |
||
| 580 nm | 46.30 | 47.00 |  |
||
| 589 nm | 46.30 | 47.00 |  |
||
| 600 nm | 46.40 | 47.00 |  |
||
| 620 nm | 46.40 | 47.10 |  |
||
| 640 nm | 46.50 | 47.20 |  |
||
| 650 nm | 46.40 | 47.10 |  |
||
| 660 nm | 46.30 | 47.00 |  |
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| 680 nm | 46.20 | 46.90 |  |
||
| 700 nm | 46.00 | 46.80 |  |
Calculated Relative Intensity Colors of Mazzettiite in Air
| RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 200% |
|---|---|---|---|---|---|---|---|---|---|
| R1 | |||||||||
| R2 |
Calculated Properties of Mazzettiite
Electron Density:
Bulk Density (Electron Density)=7.44 gm/cc
note: Specific Gravity of Mazzettiite =9.04 gm/cc.
Fermion Index:
Fermion Index = 0.1
Boson Index = 0.9
Photoelectric:
PEMazzettiite = 744.30 barns/electron
U=PEMazzettiite x rElectron Density=5,540.02 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mazzettiite is Not Radioactive
Mazzettiite Classification
Dana Class:
03.01.09.02 (03)Sulfides - Sulfosalts
(03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
(03.01.09)Dana Group
03.01.09.01 Petrovicite PbHgCu3BiSe5 Pnam 2/m 2/m 2/m
03.01.09.02 Mazzettiite! Ag3HgPbSbTe5 P na21 or Pnam Ortho
Strunz Class:
02.LB.40 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
02.L - Unclassified Sulfosalts
02.LB -With essential Pb
02.LB.40 Petrovicite PbHgCu3BiSe5 Pnam 2/m 2/m 2/m
02.LB.40 Mazzettiite! Ag3HgPbSbTe5 P na21 or Pnam Ortho
Other Mazzettiite Information
References:
NAME( CanMin, 42:1739) PHYS. PROP.(CanMin, 42:1739) OPTIC PROP.(CanMin, 42:1739)
See Also:
Links to other databases for Mazzettiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Mazzettiite Specimen Label here :
Mazzettiite
Ag3HgPbSbTe5
Dana No: 03.01.09.02 Strunz No: 02.LB.40
Locality:
Notes: