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Stalderite

A valid IMA mineral species

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Photos of Stalderite (7)

Stalderite Gallery Search Photos of Stalderite

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Stalderite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Stalderite, etc.

Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

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About StalderiteHide

Hans-Anton Stalder

Formula:

Tl(Cu,Ag)(Zn,Fe,Hg)₂(As,Sb)₂S₆

Colour:

Black with a blue and red iridescence

Lustre:

Metallic

Hardness:

3½ - 4

Specific Gravity:

4.97 (Calculated)

Crystal System:

Tetragonal

Member of:

Routhierite Group

Name:

Named after Hans-Anton Stalder (1925-2011), curator, Natural History Museum, Bern and professor of mineralogy, University of Bern (Switzerland).

Type Locality:

ⓘ Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

Isostructural with:

Routhierite

The zinc analogue of routhierite and ferrostalderite.

Unique IdentifiersHide

Mindat ID:

3744

Long-form identifier:

mindat:1:1:3744:6

GUID
(UUID V4):

25d372a5-b31d-45a7-bc84-2a690b3a1375

IMA Classification of StalderiteHide

IMA status:

Approved

IMA Formula:

TlCu(Zn,Fe,Hg)₂As₂S₆

Approval year:

1987

First published:

1995

Type description reference:

Graeser, S., Schwander, H., Wulf, R. (1995): Stalderite TlCu(Zn,Fe,Hg)2As2S6 - a new mineral related to routhierite: description and crystal structure determination. Schweizerische mineralogische und petrographische Mitteilungen 75, 337-345.

Classification of StalderiteHide

Strunz-mindat (2024):

2.GA.40

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S

Dana 8th ed.:

3.4.11.2

3 : SULFOSALTS
4 : ø = 3

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
Sld	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 StalderiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Black with a blue and red iridescence

Streak:

Brown-red

Hardness:

3½ - 4 on Mohs scale

Hardness:

VHN₁₀=132 - 138 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Irregular/Uneven

Density:

4.97 g/cm³ (Calculated)

Optical Data of StalderiteHide

Anisotropism:

weak

Bireflectance:

none

Reflectivity:

Wavelength	R₁	R₂
480nm	27.0%	30.5%
546nm	27.0%	28.0%
589nm	25.0%	27.0%
656nm	24.4%	25.5%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 30.5%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

grayish white

Internal Reflections:

rare deep red

Chemistry of StalderiteHide

Mindat Formula:

Tl(Cu,Ag)(Zn,Fe,Hg)₂(As,Sb)₂S₆

Elements listed:

Ag, As, Cu, Fe, Hg, S, Sb, Tl, Zn - search for minerals with similar chemistry

Crystallography of StalderiteHide

Crystal System:

Tetragonal

Class (H-M):

4 2m - Scalenohedral

Space Group:

I4 2m

Cell Parameters:

a = 9.855(3) Å, c = 10.937(7) Å

Ratio:

a:c = 1 : 1.11

Unit Cell V:

1,062.21 Å³ (Calculated from Unit Cell)

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)
0015409	Stalderite	Graeser S, Schwander H, Wulf R, Edenharter A (1995) Stalderite TlCu(Zn,Fe,Hg)2As2S6 - a new mineral related to routhierite: description and crystal structure determination Schweizerische Mineralogische und Petrographische Mitteilungen 75 337-345		1995	Lengenbach, Binntal, Ct. Valais, Switzerland	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Stalderite'
loop_
_publ_author_name
'Graeser S'
'Schwander H'
'Wulf R'
'Edenharter A'
_journal_name_full 'Schweizerische Mineralogische und Petrographische Mitteilungen'
_journal_volume 75 
_journal_year 1995
_journal_page_first 337
_journal_page_last 345
_publ_section_title
;
 Stalderite TlCu(Zn,Fe,Hg)2As2S6 - a new mineral related to routhierite:
 description and crystal structure determination
;
_database_code_amcsd 0015409
_chemical_compound_source 'Lengenbach, Binntal, Ct. Valais, Switzerland'
_chemical_formula_sum 'Tl Cu (Zn1.16 Fe.46 Hg.38) As2 S6'
_cell_length_a 9.865
_cell_length_b 9.865
_cell_length_c 10.938
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1064.467
_exptl_crystal_density_diffrn      4.917
_symmetry_space_group_name_H-M 'I -4 2 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-y,-x,z'
  '1/2-y,1/2-x,1/2+z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  'y,x,z'
  '1/2+y,1/2+x,1/2+z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  '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
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Tl   0.00000   0.00000   0.35010   1.00000   0.04530
Cu   0.00000   0.50000   0.25000   1.00000   0.00960
Zn   0.22530   0.50000   0.50000   0.58000   0.01830
Fe   0.22530   0.50000   0.50000   0.23000   0.01830
Hg   0.22530   0.50000   0.50000   0.19000   0.01830
As   0.26280   0.26280   0.24950   1.00000   0.01770
S1   0.10100   0.33850   0.38010   1.00000   0.01480
S2   0.12650   0.12650   0.13300   1.00000   0.01430

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
4.086 Å	(51)
3.417 Å	(34)
1.940 Å	(100)
2.541 Å	(20)
2.436 Å	(39)
1.8060 Å	(22)
1.7431 Å	(23)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of StalderiteHide

Type Locality:

ⓘ Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland

General Appearance of Type Material:

Euhedral, pseudoisometric crystals to 0.5 mm.

Place of Conservation of Type Material:

Natural History Museum and Mineralogical Institute, University of Basel, Switzerland.

Associated Minerals at Type Locality:

Reference:

Synonyms of StalderiteHide

IMA1987-024

Other Language Names for StalderiteHide

German:Stalderit

Simplified Chinese:斜硫砷铜汞矿

Spanish:Stalderita

Relationship of Stalderite to other SpeciesHide

Member of:

Routhierite Group

Other Members of this group:

Arsiccioite	AgHg₂Tl(As,Sb)₂S₆	Tet. 4 2m : I4 2m
Ferrostalderite	CuFe₂TlAs₂S₆	Tet. 4 2m : I4 2m
Ralphcannonite	AgZn₂TlAs₂S₆	Tet. 4 2m : I4 2m
Routhierite	Tl(Cu,Ag)(Hg,Zn)₂(As,Sb)₂S₆	Tet. 4 2m : I4 2m
Unnamed (Ag-Fe endmember of Routhierite Group)	AgFe₂TlAs₂S₆

Common AssociatesHide

Associated Minerals Based on Photo Data:

4 photos of Stalderite associated with Tennantite Subgroup	Cu₆(Cu₄C²⁺₂)As₄S₁₂S
2 photos of Stalderite associated with Realgar	As₄S₄
1 photo of Stalderite associated with Dolomite	CaMg(CO₃)₂
1 photo of Stalderite associated with Hatchite	AgTlPbAs₂S₅
1 photo of Stalderite associated with Tellurium-bearing Canfieldite	Ag₈(Sn,Ge)(S,Te)₆
1 photo of Stalderite associated with Dufrénoysite	Pb₂As₂S₅

Related Minerals - Strunz-mindat Grouping Hide

2.GA.	Arsiccioite	AgHg₂Tl(As,Sb)₂S₆	Tet. 4 2m : I4 2m
2.GA.	Eckerite	Ag₂CuAsS₃	Mon. 2/m : B2/b
2.GA.	Pyradoketosite	Ag₃SbS₃	Mon. 2/m
2.GA.05	Proustite	Ag₃AsS₃	Trig. 3m (3 2/m) : R3c
2.GA.05	Pyrargyrite	Ag₃SbS₃	Trig. 3m : R3c
2.GA.10	Pyrostilpnite	Ag₃SbS₃	Mon. 2/m : P2₁/b
2.GA.10	Xanthoconite	Ag₃AsS₃	Mon. 2/m : B2/b
2.GA.15	Samsonite	Ag₄MnSb₂S₆	Mon. 2/m : P2₁/m
2.GA.20	Skinnerite	Cu₃SbS₃	Mon. 2/m : P2₁/b
2.GA.20	Wittichenite	Cu₃BiS₃	Orth. 2 2 2 : P2₁ 2₁ 2₁
2.GA.20	Bytízite	Cu₃SbSe₃	Orth. mmm (2/m 2/m 2/m) : Pnma
2.GA.25	Lapieite	NiCuSbS₃	Orth. 2 2 2 : P2₁ 2₁ 2₁
2.GA.25	Mückeite	NiCu(Bi,Sb)S₃	Orth. 2 2 2 : P2₁ 2₁ 2₁
2.GA.25	Malyshevite	PdCuBiS₃	Orth. mmm (2/m 2/m 2/m) : Pmmm
2.GA.25	Lisiguangite	PtCuBiS₃	Orth. 2 2 2 : P2₁ 2₁ 2₁
2.GA.25	Roterbärite	PdBiCuSe₃	Orth. 2 2 2 : P2₁ 2₁ 2₁
2.GA.30	Aktashite	Cu₆Hg₃As₄S₁₂	Trig. 3 : R3
2.GA.30	Gruzdevite	Cu₆Hg₃Sb₄S₁₂	Trig. 3 : R3
2.GA.30	Nowackiite	Cu₆Zn₃As₄S₁₂	Trig. 3 : R3
2.GA.30	Zhengminghuaite	Cu₆Fe₃As₄S₁₂	Trig. 3 : R3
2.GA.35	Laffittite	AgHgAsS₃	Mon. 2/m
2.GA.40	Routhierite	Tl(Cu,Ag)(Hg,Zn)₂(As,Sb)₂S₆	Tet. 4 2m : I4 2m
2.GA.40	Ralphcannonite	AgZn₂TlAs₂S₆	Tet. 4 2m : I4 2m
2.GA.40	Ferrostalderite	CuFe₂TlAs₂S₆	Tet. 4 2m : I4 2m
2.GA.40	Unnamed (Ag-Fe endmember of Routhierite Group)	AgFe₂TlAs₂S₆
2.GA.45	Erniggliite	Tl₂SnAs₂S₆	Trig. 3 : P3
2.GA.50	Bournonite	PbCuSbS₃	Orth. mm2 : Pmn2₁
2.GA.50	Seligmannite	PbCuAsS₃	Orth. mmm (2/m 2/m 2/m) : Pmmn
2.GA.50	Součekite	PbCuBi(S,Se)₃	Orth. mm2
2.GA.50	Unnamed (Pb-Cu-Bi Selenide)	PbCuBiSe₃
2.GA.50	Cerromojonite	CuPbBiSe₃	Orth.
2.GA.55	Eldragónite	Cu₆BiSe₄(Se₂)	Orth. mmm (2/m 2/m 2/m)

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 StalderiteHide

mindat.org URL:

https://www.mindat.org/min-3744.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

Handbook of Mineralogy page PDF

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References for StalderiteHide

Reference List:

Mineralogical Record: 27: 466.

Jambor, J.L., Kovalenker, V.A., Roberts, A.C. (1996) New mineral names. American Mineralogist: 81: 1015.

(2023) Stalderite. Handbook of Mineralogy. Mineralogical Society of America

Localities for StalderiteHide

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.


Russia
Sverdlovsk Oblast Serovsky District Turya river Tur'insk ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit)	Kasatkin et al. (2020)

Switzerland (TL)
Valais Goms Binn Fäld ⓘ Lengenbach Quarry (TL)	Graeser et al. (1995)

Stalderite

About StalderiteHide

Unique IdentifiersHide

IMA Classification of StalderiteHide

Classification of StalderiteHide

Mineral SymbolsHide

Physical Properties of StalderiteHide

Optical Data of StalderiteHide

Chemistry of StalderiteHide

Crystallography of StalderiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of StalderiteHide

Synonyms of StalderiteHide

Other Language Names for StalderiteHide

Relationship of Stalderite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for StalderiteHide

References for StalderiteHide

Localities for StalderiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide