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Ginelfite

A valid IMA mineral species

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Ginelfite

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

Ginelfite

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

Ginelfite

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

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About GinelfiteHide

Carlo Gini (left) and Francesco Guelfi (right)

Formula:

Ag₂(Ag_0.5Fe)TlPb_23.5(Sb,As)_33.5S₇₆

Colour:

dark grey

Lustre:

Metallic

Hardness:

3 - 3½

Specific Gravity:

5.765 (Calculated)

Crystal System:

Triclinic

Name:

This name honours Carlo Gini (born 1954) and Francesco Guelfi (born 1947), former technicians at the X-ray laboratory of the Dipartimento di Scienze della Terra of the Università di Pisa (Carlo Gini from 1988 to 2019, Francesco Guelfi from 1981 to 2011) for their invaluable contribution to the development of the mineralogical research carried out in Pisa over the last 40 years. Besides, the naming also intends to acknowledge the fundamental role played by lab technicians all around the world in supporting researchers in mineralogy. The name ginelfite is formed by a combination of their surnames.

Type Locality:

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

New structure type. Chemically similar to baiamareite.

A new rod-based Ag–Tl–Pb sulfosalt showing a boxwork organization.

Ginelfite belongs to the senary sulfide system Tl2S–Ag2S–FeS–PbS–Sb2S3–As2S3. Currently, it is the only natural member of this system.

Unique IdentifiersHide

Mindat ID:

470617

Long-form identifier:

mindat:1:1:470617:1

IMA Classification of GinelfiteHide

IMA status:

Approved

IMA Formula:

Ag₂(Ag_0.5Fe²⁺_0.5)TlPb_23.5(Sb,As)_33.5S₇₆

Approval history:

IMA no. 2022-110

Type description reference:

Biagioni, C.; Sejkora, J.; Moëlo, Y.; Favreau, G.; Bourgoin, V.; Boulliard, J.-C.; Bonaccorsi, E.; Mauro, D.; Musetti, S.; Pasero, M.; et al. (2025) Ginelfite, Ag₂(Ag_0.5Fe_0.5)TlPb_24.5(Sb,As)_32.5S_75.5, a new boxwork sulfosalt from Jas Roux, France: occurrence and crystal structure. European Journal of Mineralogy, 37 (3). 319-335 doi:10.5194/ejm-37-319-2025

Classification of GinelfiteHide

Strunz-mindat (2025):

2.JB.

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Glf	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of GinelfiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Dark grey

Streak:

Black

Hardness:

3 - 3½ on Mohs scale

Hardness:

VHN₂₅=157 - 170 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Conchoidal

Density:

5.765 g/cm³ (Calculated)

Optical Data of GinelfiteHide

Anisotropism:

Anisotropism is moderate, with weak brownish and blue tints.

Bireflectance:

weak

Reflectivity:

Wavelength	R₁ (%)	R₂ (%)
470nm	35.4%	38.1%
546nm	34.6%	37.0%
589nm	33.7%	36.0%
650nm	32.3%	34.6%

Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 38.1%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

light grey

Internal Reflections:

none

Pleochroism:

Weak

Chemistry of GinelfiteHide

Mindat Formula:

Ag₂(Ag_0.5Fe)TlPb_23.5(Sb,As)_33.5S₇₆

Element Weights:

Element	% weight
Pb	40.866 %
Sb	34.234 %
S	20.453 %
Ag	2.263 %
Tl	1.715 %
Fe	0.469 %

Calculated from ideal end-member formula.

Elements listed:

Ag, As, Fe, Pb, S, Sb, Tl - search for minerals with similar chemistry

Crystallography of GinelfiteHide

Crystal System:

Triclinic

Class (H-M):

1 - Pinacoidal

Space Group:

Cell Parameters:

a = 8.3635(6) Å, b = 27.5481(19) Å, c = 29.199(2) Å
α = 95.335(3)°, β = 94.123(3)°, γ = 94.367(3)°

Ratio:

a:b:c = 0.304 : 1 : 1.06

Unit Cell V:

6,657.65 Å³ (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
4.168 Å	(w)
3.413 Å	(s)
2.965 Å	(s)
2.805 Å	(ms)
2.729 Å	(ms)
2.091 Å	(vs)
1.872 Å	(ms)
1.785 Å	(ms)

Locality:

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

Reference:

Type Occurrence of GinelfiteHide

Type Locality:

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

General Appearance of Type Material:

acicular crystals up to 0.5 mm long

Place of Conservation of Type Material:

collections of( 1) the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 20023, and (2) the Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 193 00 Prague 9, Czech Republic, catalogue number P1P 31/2022

Geological Setting of Type Material:

hydrothermal deposit rich in thallium

Associated Minerals at Type Locality:

Lopatkaite

Quartz

Sphalerite

Reference:

Other Language Names for GinelfiteHide

Dutch:Ginelfiet

German:Ginelfit

Related Minerals - Strunz-mindat Grouping Hide

2.JB.	Clino-oscarkempffite	Ag₁₅Pb₆Sb₂₁Bi₁₈S₇₂	Mon. 2/m : P2₁/b
2.JB.	Arsenquatrandorite	Ag_17.6Pb_12.8Sb_38.1As_11.5S₉₆	Mon. 2/m : P2₁/b
2.JB.	Andreadiniite	CuHgAg₇Pb₇Sb₂₄S₄₈	Mon. 2/m : P2₁/b
2.JB.	Chukotkaite	AgPb₇Sb₅S₁₅	Mon. 2/m : P2₁/b
2.JB.	Selenojunoite	Cu₂Pb₃Bi₈Se₁₆	Mon. 2/m : B2/m
2.JB.	Lechnerite	Ag₁₀Cu₄HgPb₃₃Sb₅₈S₁₂₈	Tric. 1 : P1
2.JB.	Cuprosenandorite	Ag₁₆Cu₈Pb₂₄Sb₇₂S₁₄₄	Orth. mm2 : Pna2₁
2.JB.	Morleyite	Ag₂CuPb₂₅Sb₂₄As₄S_68.5	Tric. 1 : P1
2.JB.	Lazerckerite	Ag_3.75Pb_4.50(Sb_7.75Bi₄)S₂₄	Mon. 2/m : P2₁/b
2.JB.	Lasmanisite	Ag₁₂Pb₁₃Mn₁₁Sb₄₄S₉₆	Orth. 2 2 2 : P2₁ 2₁ 2₁
2.JB.	Montpelvouxite	AgPb₁₆Sb₂₇As₁₈S₈₄	Tric. 1 : P1
2.JB.	Senandorite	AgPbSb₃S₆	Orth. mm2 : Pmn2₁
2.JB.	Oscarkempffite	Ag₁₀Pb₄(Sb₁₇Bi₉)S₄₈	Orth. mm2
2.JB.05	Diaphorite	Ag₃Pb₂Sb₃S₈	Mon. 2/m : P2₁/b
2.JB.10	Cosalite	Pb₂Bi₂S₅	Orth. mmm (2/m 2/m 2/m)
2.JB.15	Marrite	AgPbAsS₃	Mon. 2/m : P2₁/b
2.JB.15	Freieslebenite	AgPbSbS₃	Mon. 2/m : P2₁/b
2.JB.20	Cannizzarite	Pb₄₈Bi₅₆S₁₃₂	Mon. 2/m : P2₁/m
2.JB.20	Wittite	Pb₉Bi₁₂(S,Se)₂₇	Mon.
2.JB.25j	Rouxelite	Cu₂HgPb₂₃Sb₂₇S_65.5	Mon. 2/m : B2/m
2.JB.25i	Neyite	Ag₂Cu₆Pb₂₅Bi₂₆S₆₈	Mon. 2/m : B2/m
2.JB.25a	Junoite	Cu₂Pb₃Bi₈(S,Se)₁₆	Mon. 2/m : B2/m
2.JB.25f	Ángelaite	Cu₂AgPbBiS₄	Orth. mmm (2/m 2/m 2/m) : Pnma
2.JB.25c	Nordströmite	CuPb₃Bi₇(Se₄S₁₀)	Mon. 2/m : P2₁/m
2.JB.25i	Cuproneyite	Cu₇Pb₂₇Bi₂₅S₆₈	Mon. 2/m : B2/m
2.JB.25g	Nuffieldite	Cu_1.4Pb_2.4Bi_2.4Sb_0.2S₇	Orth. mmm (2/m 2/m 2/m)
2.JB.25h	Weibullite	Pb₅Bi₈Se₇S₁₁	Orth. mmm (2/m 2/m 2/m) : Pnma
2.JB.25d	Proudite	CuPb_7.5Bi_9.33(S,Se)₂₂	Mon. 2/m : B2/m
2.JB.25b	Felbertalite	Cu₂Pb₆Bi₈S₁₉	Mon. 2/m : B2/m
2.JB.30a	Jordanite	Pb₁₄As₆S₂₃	Mon. 2/m : P2₁/m
2.JB.30a	Geocronite	Pb₁₄Sb₆S₂₃	Mon. 2/m : P2₁/m
2.JB.30a	Arsenmarcobaldiite	Pb₁₂(As_3.2Sb_2.8)_Σ6S₂₁	Tric. 1 : P1
2.JB.30b	Kirkiite	Pb₁₀Bi₃As₃S₁₉	Mon. 2/m : P2₁/m
2.JB.30c	Tsugaruite	Pb₂₈As₁₅S₅₀Cl	Orth. mm2 : Pnn2
2.JB.30a	Marcobaldiite	Pb₁₂(Sb₃As₂Bi)_Σ6S₂₁	Tric. 1 : P1
2.JB.35d	Pellouxite	(Cu,Ag)Pb₁₀Sb₁₂S₂₇O(Cl,S)_0.6	Mon. 2/m : B2/m
2.JB.35e	Chovanite	Pb_15-2xSb_14+2xS₃₆O_x (x ~ 0.2)	Mon. 2/m : B2/m
2.JB.35a	Zinkenite	Pb₉Sb₂₂S₄₂	Hex. 6 : P6₃
2.JB.35c	Pillaite	Pb₉Sb₁₀S₂₃ClO_0.5	Mon. 2/m : B2/m
2.JB.35b	Scainiite	Pb₁₄Sb₃₀S₅₄O₅	Mon. 2/m : B2/m
2.JB.35f	Tubulite	Ag₂Pb₂₂Sb₂₀S₅₃	Mon. m : Pb
2.JB.40a	Fizélyite	Ag₅Pb₁₄Sb₂₁S₄₈	Mon. 2/m
2.JB.40a	Ramdohrite	Pb_5.9Fe_0.1Mn_0.1In_0.1Cd_0.2Ag_2.8Sb_10.8S₂₄	Mon. 2/m
2.JB.40e	Ustarasite	Pb(Bi,Sb)₆S₁₀ (?)
2.JB.40a	Bursaite	Pb₅Bi₄S₁₁ (?)	Orth.
2.JB.40	UM1988-05-S:AgBiCuHgPb	(Hg,Ag,Cu,Pb)₅Pb₅Bi₁₁S₂₇
2.JB.40	UM1988-06-S:AgBiCuHgPb	(Pb,Hg)₁₂(Cu,Ag)₃(Bi,Sb)₁₀(S,Te)₂₇
2.JB.40a	Terrywallaceite	AgPb(Sb,Bi)₃S₆	Mon. 2/m : P2₁/b
2.JB.40a	Jasrouxite	Ag₁₆Pb₄(Sb₂₄As₁₆)S₇₂	Tric. 1 : P1
2.JB.40a	Tarutinoite	Ag₃Pb₇Bi₇S₁₉	Mon. 2/m : B2/m
2.JB.40a	Oyonite	Ag₃Mn₂Pb₄Sb₇As₄S₂₄	Mon. 2/m
2.JB.40b	Heyrovskýite	Pb₆Bi₂S₉	Orth. mmm (2/m 2/m 2/m) : Cccm
2.JB.40a	Quatrandorite	AgPbSb₃S₆	Mon. 2/m : P2₁/b
2.JB.40a	Erzwiesite	Ag₈Pb₁₂Bi₁₆S₄₀	Orth. mmm (2/m 2/m 2/m) : Cmcm
2.JB.40a	Vikingite	Ag₅Pb₈Bi₁₃S₃₀	Mon. 2/m : B2/m
2.JB.40a	Lillianite	Pb_3-2xAg_xBi_2+xS₆	Orth. mmm (2/m 2/m 2/m)
2.JB.40b	Baiamareite	Ag₄Pb₁₂Fe₄Sb₂₀S₄₈	Mon. 2/m
2.JB.40a	Staročeskéite	Ag_0.70Pb_1.60(Bi_1.35Sb_1.35)_Σ2.70S₆	Orth. mmm (2/m 2/m 2/m) : Cmcm
2.JB.40a	Roshchinite	Ag₁₉Pb₁₀Sb₅₁S₉₆	Orth. mmm (2/m 2/m 2/m) : Pnma
2.JB.40b	Aschamalmite	Pb_6-3xBi_2+xS₉	Mon. 2/m : B2/m
2.JB.40b	Eskimoite	Ag₇Pb₁₀Bi₁₅S₃₆	Mon.
2.JB.40a	Menchettiite	AgPb_2.40Mn_1.60Sb₃As₂S₁₂	Mon. 2/m : P2₁/b
2.JB.40a	Holubite	Ag₃Pb₆(Sb₈Bi₃)S₂₄	Mon. 2/m
2.JB.40a	Brusnitsynite	Mn₃CuPbAs₃Sb₂S₁₂	Mon. 2/m : P2₁/b
2.JB.40a	Treasurite	Ag₇Pb₆Bi₁₅S₃₂	Mon.
2.JB.40c	Ourayite	Ag₃Pb₄Bi₅S₁₃	Orth.
2.JB.40a	Uchucchacuaite	AgMnPb₃Sb₅S₁₂	Orth. mmm (2/m 2/m 2/m) : Pmmm
2.JB.40d	Schirmerite	PbAgBi₃S₆ - Pb₃Ag_1.5Bi_3.5S₉	Orth.
2.JB.40a	Xilingolite	Pb₃Bi₂S₆	Mon.
2.JB.40a	Gustavite	AgPbBi₃S₆	Orth. mmm (2/m 2/m 2/m)
2.JB.55	Gratonite	Pb₉As₄S₁₅	Trig. 3m : R3m
2.JB.60	Marrucciite	Hg₃Pb₁₆Sb₁₈S₄₆	Mon. 2/m : B2/m
2.JB.65	Vurroite	Pb₂₀Sn₂(Bi,As)₂₂S₅₄Cl₆	Mon. 2/m : B2/b
2.JB.65	Tazieffite	Pb₂₀Cd₂(As,Bi)₂₂S₅₀Cl₁₀	Mon. 2/m : B2/b
2.JB.70	Daliranite	PbHgAs₂S₅	Mon.

Other InformationHide

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 GinelfiteHide

mindat.org URL:

https://www.mindat.org/min-470617.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

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References for GinelfiteHide

Reference List:

Bosi, Ferdinando; Miyawaki, Ritsuro; Hatert, Frédéric; Pasero, Marco; Mills, Stuart J. (2023) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 71. European Journal of Mineralogy, 35 (1). 75-79 doi:10.5194/ejm-35-75-2023

Localities for GinelfiteHide

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

- 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

La Chapelle-en-Valgaudemar

ⓘ Jas Roux (TL)

Bosi et al. (2023) +1 other reference

Quick NavTop About Ginelfite Unique Identifiers IMA Classification Classification Mineral Symbols Physical Properties Optical Data Chemistry Crystallography X-Ray Powder Diffraction Type Occurrence Other Languages Strunz-Mindat Other Information Internet Links References Localities Locality List

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Ginelfite

About GinelfiteHide

Unique IdentifiersHide

IMA Classification of GinelfiteHide

Classification of GinelfiteHide

Mineral SymbolsHide

Physical Properties of GinelfiteHide

Optical Data of GinelfiteHide

Chemistry of GinelfiteHide

Crystallography of GinelfiteHide

X-Ray Powder DiffractionHide

Type Occurrence of GinelfiteHide

Other Language Names for GinelfiteHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for GinelfiteHide

References for GinelfiteHide

Localities for GinelfiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide