Mazzettiite
A valid IMA mineral species
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Formula:
Ag3HgPbSbTe5
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
9.04 (Calculated)
Crystal System:
Orthorhombic
Name:
For Giuseppe Mazzetti (1942-2003), curator in chief Mineralogy section, Museo di Storia Naturale, Universita di Firenze.
This page provides mineralogical data about Mazzettiite.
Unique Identifiers
Mindat ID:
27205
Long-form identifier:
mindat:1:1:27205:6
GUID
(UUID V4):
(UUID V4):
ba71dd15-224d-432c-b69b-b9333478fc65
IMA Classification of Mazzettiite
Approved
Approval year:
2004
First published:
2004
Approval history:
2004–03
Classification of Mazzettiite
2.LB.40
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
B : With essential Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
B : With essential Pb
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Mzt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Mazzettiite
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Physical Properties of Mazzettiite
Metallic
Transparency:
Opaque
Streak:
Black
Hardness:
3 - 3½ on Mohs scale
Hardness:
VHN25=96 - 106 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Density:
9.04 g/cm3 (Calculated)
Comment:
Could not be measured due to small grain size.
Optical Data of Mazzettiite
Anisotropism:
Moderate
Bireflectance:
Weak to moderate
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 45.1% | 45.4% |
420nm | 45.2% | 45.7% |
440nm | 45.4% | 45.9% |
460nm | 45.6% | 46.1% |
470nm | 45.6% | 46.1% |
480nm | 45.9% | 46.3% |
480nm | 45.9% | 46.3% |
500nm | 45.9% | 46.4% |
520nm | 46.0% | 46.4% |
540nm | 46.0% | 46.5% |
546nm | 46.1% | 46.6% |
560nm | 46.2% | 46.6% |
580nm | 46.3% | 47.0% |
589nm | 46.3% | 47.0% |
600nm | 46.4% | 47.0% |
620nm | 46.4% | 47.1% |
640nm | 46.5% | 47.2% |
650nm | 46.4% | 47.1% |
660nm | 46.3% | 47.0% |
680nm | 46.4% | 46.9% |
700nm | 46.0% | 46.8% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 47.2%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Light grey
Internal Reflections:
None
Pleochroism:
Weak
Comments:
Greenish gray to a slightly darker bluish gray
Chemistry of Mazzettiite
Mindat Formula:
Ag3HgPbSbTe5
Crystallography of Mazzettiite
Crystal System:
Orthorhombic
Cell Parameters:
a = 16.495(6) Å, b = 14.762(7) Å, c = 4.506(2) Å
Ratio:
a:b:c = 1.117 : 1 : 0.305
Unit Cell V:
1,097.21 ų (Calculated from Unit Cell)
Z:
4
Comment:
Point Group: mm2 or 2/m 2/m 2/m.; Space Group: Pna21 or Pnam.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.65 Å | (60) |
3.60 Å | (40) |
3.26 Å | (50) |
3.17 Å | (60) |
3.01 Å | (100) |
2.754 Å | (60) |
2.316 Å | (45) |
2.137 Å | (50) |
1.806 Å | (55) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-? alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Mazzettiite
General Appearance of Type Material:
Anhedral to subhedral grains, to 200 μm.
Place of Conservation of Type Material:
Museo di Storia Naturale, Università di Firenze, Italy, 2951/I.
Institut Royal des Sciences Naturelles de Belgique, V/876.
Institut Royal des Sciences Naturelles de Belgique, V/876.
Geological Setting of Type Material:
Hydrothermal telluride deposit.
Associated Minerals at Type Locality:
Reference:
Bindi, L., Cipriani, C. (2004) Mazzettiite, Ag3HgPbSbTe5, a new mineral species from Findley Gulch, Saguache County, Colorado, USA. The Canadian Mineralogist: 42: 1739-1743.
Synonyms of Mazzettiite
Other Language Names for Mazzettiite
Related Minerals - Strunz-mindat Grouping
2.LB. | Ciriottiite | Cu(Cu,Ag)3Pb19(Sb,As)22(As2)S56 |
2.LB. | Hayyanite | Cu5Ag11Pb76Sb71As17(As2+)8S224 |
2.LB.05 | Miharaite | Cu4FePbBiS6 |
2.LB.30 | Ardaite | Pb19Sb13S35Cl7 |
2.LB.30 | Launayite | CuPb10(Sb,As)12S20 |
2.LB.30 | Madocite | Pb19(Sb,As)16S43 |
2.LB.30 | Playfairite | Pb16(Sb,As)19S44Cl |
2.LB.30 | Sorbyite | CuPb9(Sb,As)11S26 |
2.LB.30 | Sterryite | Cu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56 |
2.LB.35 | Larosite | (Cu,Ag)21PbBiS13 |
2.LB.40 | Petrovicite | Cu3HgPbBiSe5 |
2.LB.45 | Crerarite | Pt2-x(Bi,Pb)11(S,Se)11 |
2.LB.50 | Quijarroite | Cu6HgPb2Bi4Se12 |
2.LB.55 | Znamenskyite | Pb4In2Bi4S13 |
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.
Internet Links for Mazzettiite
mindat.org URL:
https://www.mindat.org/min-27205.html
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Please feel free to link to this page.
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References for Mazzettiite
Reference List:
Bindi, L., Cipriani, C. (2004) Mazzettiite, Ag3HgPbSbTe5, a new mineral species from Findley Gulch, Saguache County, Colorado, USA. The Canadian Mineralogist, 42 (6) 1739-1743 doi:10.2113/gscanmin.42.6.1739
Localities for Mazzettiite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
USA (TL) | |
|
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