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Mazzettiite Mineral Data
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General Mazzettiite Information
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 Chemical Formula: |
Ag3HgPbSbTe5 |
| Composition: |
Molecular Weight = 1,493.72 gm |
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Silver 21.59 % Ag |
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Mercury 13.56 % Hg |
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Antimony 8.07 % Sb |
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Tellurium 42.63 % Te |
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Lead 14.15 % Pb |
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______ |
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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 |
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Mazzettiite Image |
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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
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| 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: |
Orthorhombic Space 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), |
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Physical Properties of Mazzettiite
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| 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 |
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Optical Properties of Mazzettiite
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| Optical Data: |
NCalc= 2.5 - from Gladstone-Dale relationship (KC = 0.1664) where Ncalc=Dcalc*KC+1
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| 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 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
45.10 |
45.40 |
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| 420 nm |
45.20 |
45.70 |
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| 440 nm |
45.40 |
45.90 |
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| 460 nm |
45.60 |
46.10 |
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| 470 nm |
45.60 |
46.10 |
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| 480 nm |
45.90 |
46.30 |
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| 500 nm |
45.90 |
46.40 |
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| 520 nm |
46.00 |
46.40 |
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| 540 nm |
46.00 |
46.50 |
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| 546 nm |
46.10 |
46.60 |
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| 560 nm |
46.20 |
46.60 |
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| 580 nm |
46.30 |
47.00 |
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| 589 nm |
46.30 |
47.00 |
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| 600 nm |
46.40 |
47.00 |
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| 620 nm |
46.40 |
47.10 |
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| 640 nm |
46.50 |
47.20 |
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| 650 nm |
46.40 |
47.10 |
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| 660 nm |
46.30 |
47.00 |
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| 680 nm |
46.20 |
46.90 |
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| 700 nm |
46.00 |
46.80 |
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Calculated Relative Intensity Colors of Mazzettiite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
200% |
| R1 |
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| R2 |
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Calculated Properties of Mazzettiite
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| Electron Density: |
Bulk Density (Electron Density)=7.44 gm/cc
note: Specific Gravity of Mazzettiite =9.04 gm/cc.
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| 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.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mazzettiite is Not Radioactive |
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Mazzettiite Classification
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| Dana Class: |
03.01.09.02 (03)Sulfides - Sulfosalts |
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(03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.01.09)Dana Group |
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03.01.09.01 Petrovicite PbHgCu3BiSe5 Pnam 2/m 2/m 2/m |
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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 |
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02.L - Unclassified Sulfosalts |
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02.LB -With essential Pb |
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02.LB.40 Petrovicite PbHgCu3BiSe5 Pnam 2/m 2/m 2/m |
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02.LB.40 Mazzettiite! Ag3HgPbSbTe5 P na21 or Pnam Ortho |
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Other Mazzettiite Information
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| 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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Mazzettiite
Ag3HgPbSbTe5
Dana No: 03.01.09.02 Strunz No: 02.LB.40
Locality:
Notes:
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