Laffittite

Laffittite, etc.

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Laffittite

Getchell Mine, Adam Peak, Potosi Mining District, Osgood Mountains, Humboldt County, Nevada, USA

Laffittite

Getchell Mine, Adam Peak, Potosi Mining District, Osgood Mountains, Humboldt County, Nevada, USA

Laffittite, etc.

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Laffittite

Getchell Mine, Adam Peak, Potosi Mining District, Osgood Mountains, Humboldt County, Nevada, USA

Laffittite

Getchell Mine, Adam Peak, Potosi Mining District, Osgood Mountains, Humboldt County, Nevada, USA

Laffittite, etc.

Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

Laffittite

Getchell Mine, Adam Peak, Potosi Mining District, Osgood Mountains, Humboldt County, Nevada, USA

About LaffittiteHide

Pierre Laffitte (1925 - )

Formula:

AgHgAsS₃

Colour:

Dark red to cherry-red, may be very dark-red with only red glints

Lustre:

Adamantine, Metallic

Hardness:

3½

Specific Gravity:

6.11

Crystal System:

Monoclinic

Name:

Named in 1974 by Zdeněk Johan, Joseph Mantienne, and R. Picot in honor of Pierre Paul Laffitte (January 1, 1925 Saint-Paul-de-Vence, Alpes-Maritimes, France - ), director of BRGM (French Geological Survey), then director and president of Ecole Nationale Supérieure des Mines de Paris.

Type Locality:

ⓘ Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

As analogue of UM1993-09-S:AgHgSb.

Unique IdentifiersHide

IMA Classification of LaffittiteHide

Classification of LaffittiteHide

Mineral SymbolsHide

Physical Properties of LaffittiteHide

Optical Data of LaffittiteHide

Anisotropism:

Strong to moderate, pale gray-blue to dark gray

Reflectivity:

Wavelength	R1	R2
400nm	34.5%	38.4%
420nm	34.6%	37.7%
440nm	34.7%	37.0%
460nm	34.4%	36.1%
480nm	33.8%	35.2%
500nm	32.9%	34.3%
520nm	31.8%	33.4%
540nm	30.7%	32.5%
560nm	29.5%	31.7%
580nm	28.6%	30.8%
600nm	28.0%	30.1%
620nm	27.4%	29.7%
640nm	27.1%	29.4%
660nm	26.8%	29.4%
680nm	26.6%	29.2%
700nm	26.3%	28.9%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 38.4%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Bluish white

Internal Reflections:

Purple-red

Pleochroism:

Strong

Chemistry of LaffittiteHide

Crystallography of LaffittiteHide

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0000889	Laffittite	Nakai I, Appleman D E (1983) Laffittite, AgHgAsS3: crystal structure and second occurrence from the Getchell mine, Nevada American Mineralogist 68 235-244		1983		0	293
0017799	Laffittite	Pervukhina N V, Borisov S V, Magarill S A, Vasil'ev V I, Kuratieva N V (2010) Redetermination and crystallographic analysis of the structure of Sb-containing laffittite AgHg(As,Sb)S3 from Chauvai (Kyrgyzstan) Journal of Structural Chemistry 51 683-688		2010	Chauvai deposit, Kyrgyzstan	0	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Laffittite' loop_ _publ_author_name 'Nakai I' 'Appleman D E' _journal_name_full 'American Mineralogist' _journal_volume 68 _journal_year 1983 _journal_page_first 235 _journal_page_last 244 _publ_section_title ; Laffittite, AgHgAsS3: crystal structure and second occurrence from the Getchell mine, Nevada ; _database_code_amcsd 0000889 _chemical_formula_sum 'Ag Hg As S3' _cell_length_a 7.732 _cell_length_b 11.285 _cell_length_c 6.643 _cell_angle_alpha 90 _cell_angle_beta 115.16 _cell_angle_gamma 90 _cell_volume 524.645 _exptl_crystal_density_diffrn 6.072 _symmetry_space_group_name_H-M 'A 1 a 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2+y,1/2+z' '1/2+x,-y,z' '1/2+x,1/2-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ag 0.25000 0.02210 0.00000 Hg 0.78910 0.31660 0.02490 As 0.28740 0.35230 0.01950 S1 0.42140 0.00890 0.43180 S2 0.98280 0.28410 0.46970 S3 0.43690 0.37220 0.39470 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ag 0.02910 0.03900 0.03260 0.00920 0.01520 -0.00470 Hg 0.03030 0.02800 0.02920 -0.00460 0.01650 0.00520 As 0.01370 0.01750 0.01620 -0.00450 0.00790 -0.01390 S1 0.01970 0.01680 0.01710 0.00060 0.01280 0.00000 S2 0.01780 0.01850 0.01160 -0.00110 0.00730 -0.00010 S3 0.02140 0.02350 0.01090 -0.00300 0.00930 0.00240

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Geological EnvironmentHide

Type Occurrence of LaffittiteHide

Synonyms of LaffittiteHide

Other Language Names for LaffittiteHide

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Related Minerals - Strunz-mindat GroupingHide

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Internet Links for LaffittiteHide

References for LaffittiteHide

Reference List:

Year ⬇Author Title Publisher

Johan, Z., Mantienne, J., Picot, R. (1974) La routhiérite, TlHgAsS3, et la laffittite, AgHgAsS3, deux nouvelles espèces minérales. Bulletin de la Société Française de Minéralogie et de Cristallographie: 97: 48-53.

Johan, Z., Mantienne, J., Picot, R. (1974) La routhiérite, TlHgAsS3, et la laffittite, AgHgAsS3, deux nouvelles espèces minérales. Bulletin de la Société Française de Minéralogie et de Cristallographie: 97: 48-53.

Fleischer, Michael, Mandarino, Joseph A. (1975) NEW MINERAL NAMES. American Mineralogist, 60 (9-10). 945-947

Il'yasheva, N.A., Godovikov, A.A., Nenashev, B.G., Popov, S.P. (1979) Synthese de la laffittite AgHgAsS3. Doklady Akademii Nauk SSSR: 15(10): 1748-1751.

Nakai, I. Appleman, D.E. (1983) Laffitite, AgHgAsS3, crystal structure & second occurrence from the Getchell Mine, Nevada. American Mineralogist: 68: 235-244.

Borisov, S.V., Magarill, S.A., Pervukhina, N.V. (2009) Characteristic features of crystal chemistry of natural mercury-containing sulfides and sulfosalts. Journal of Structural Chemistry: 50: 853-860.

Pervukhina, N.V., Borisov, S.V., Magarill, S.A., Vasil'ev, V.I., Kuratieva, N.V. (2010) Redetermination and crystallographic analysis of the structure of Sb-containing laffittite AgHg(As,Sb)S3 from Chauvai (Kyrgyzstan). Journal of Structural Chemistry: 51: 683-688.

Biagioni, C., Bonaccorsi, E., Moëlo, Y., Orlandi, P. (2014) Mercury-arsenic sulfosalts from Apuan Alps (Tuscany, Italy). II. Aktashite, Cu6Hg3As4S12, and laffittite, AgHgAsS3, from the Monte Arsiccio mine: occurrence and crystal structure. Periodico di Mineralogia: 83: 1-18.

Localities for LaffittiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- 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.

France (TL)
Provence-Alpes-Côte d'Azur Hautes-Alpes Gap La Chapelle-en-Valgaudemar ⓘ Jas Roux (TL)	Johan, Z., Mantienne, J., Picot, R. (1974) La routhiérite, TlHgAsS3, et la laffittite, AgHgAsS3, deux nouvelles espèces minérales. Bulletin de la Société Française de Minéralogie et de Cristallographie: 97: 48-53. Johan, Z., Mantienne, J. (2000) Thallium-rich mineralization at Jas Roux, Hautes-Alpes, France: a complex epithermal, sediment-hosted, ore-forming system. Journal of the Czech Geological Society: 45: 63-77.
Italy
Tuscany Lucca Province Stazzema Sant'Anna di Stazzema ⓘ Monte Arsiccio Mine	Biagioni, C., Bonaccorsi, E., Moëlo, Y., Orlandi, P. (2014): Mercury-arsenic sulfosalts from Apuan Alps (Tuscany, Italy). II. Aktashite, Cu6Hg3As4S12, and laffittite, AgHgAsS3, from the Monte Arsiccio mine: occurrence and crystal structure. Periodico di Mineralogia, 83, 1-18.
Kyrgyzstan
Batken Region ⓘ Chauvai (Chauvay) Sb-Hg Deposit	Kolesar, P., Brekler, V., Tvrdý, J. (1993) Südkirgisien, Quecksilber-Antimon-Lagerstätten und ihre Mineralien. Lapis: 18(11): 11-24. Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30 Pervukhina, N. V., Borisov, S. V., Magarill, S. A., Vasil’ev, V. I., & Kuratieva, N. V. (2010). Redetermination and Crystallographic Analysis of the Structure of Sb-Containing Laffittite AgHg (As, Sb) S 3 From Chauvai (Kyrgyzstan). Journal of Structural Chemistry, 51(4), 683-688.
Russia
Sverdlovsk Oblast Serovsky District Turya river Tur'insk ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit)	Stepanov, Sergey Y. Palamarchuk, Roman S. Varlamov, Dmitry A. Kiseleva, Darya V. Sharpyonok, Ludmila N. Škoda, Radek Kasatkin, Anatoly V. 2021. "The Features of Native Gold in Ore-Bearing Breccias with Realgar-Orpiment Cement of the Vorontsovskoe Deposit (Northern Urals, Russia)" Minerals 11, no. 5: 541. https://doi.org/10.3390/min11050541 Vikentyev, I. V., Tyukova, E. E., Vikent'Eva, O. V., Chugaev, A. V., Dubinina, E. O., Prokofiev, V. Y., & Murzin, V. V. (2019). Vorontsovka Carlin-style gold deposit in the North Urals: Mineralogy, fluid inclusion and isotope data for genetic model. Chemical Geology, 508, 144-166. Kasatkin, A. V., Stepanov, S. Y., Tsyganko, M. V., Škoda, R., Nestola, F., Plášil, J., ... & Palamarchuk, R. S. (2020). Mineralogy of the Vorontsovskoe gold deposit (Northern Urals). Part 1: History of study, mineral assemblages, list of minerals. Mineralogiya [Mineralogy], 6(4), 3-34.
USA
Nevada Humboldt County Osgood Mountains Potosi Mining District Adam Peak ⓘ Getchell Mine	Nakai,I. & Appleman, D.E. (1983): Laffitite, AgHgAsS3, crystal structure & second occurrence from the Getchell Mine, Nevada, American Mineralogist, 68: 235-244 Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology
ⓘ Summer Camp pit	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Turquoise Ridge Mine	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Turquoise Ridge Underground Mine (Getchell Underground; Hansen Creek pit)	(2005) Mineral Resources Data System (MRDS), US Geological Survey.
ⓘ Hansen Creek Deposit	(2005) Mineral Resources Data System (MRDS), US Geological Survey.