Stützite
A valid IMA mineral species - grandfathered
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About Stützite
Andreas Xaverius Stütz
Formula:
Ag5-xTe3, x = 0.24-0.36
Idealised Ag7Te4
Colour:
Dark lead-grey, bronze-brown to iridescent (tarnished)
Lustre:
Metallic
Hardness:
3½
Crystal System:
Hexagonal
Name:
In honour of Andreas Xavier Stütz (1747–1806), mineralogist and past Director of the Mineral Cabinet (later Natural History Museum) of Vienna, Austria.
Type Locality:
Name Encoding
ASCII-7:
Stutzite
Unique Identifiers
Mindat ID:
3813
Long-form identifier:
mindat:1:1:3813:9
Similar Names
| Studtite | A valid IMA mineral species - grandfathered | [(UO2)(O2)(H2O)2] · H2O |
IMA Classification of Stützite
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Redefined by the IMA
IMA Formula:
Ag4.64-4.76Te3
Classification of Stützite
2.BA.65
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
2.16.13.1
2 : SULFIDES
16 : Miscellaneous
2 : SULFIDES
16 : Miscellaneous
3.2.7
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
2 : Sulphides etc. of Ag
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
2 : Sulphides etc. of Ag
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Stz | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Stz | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Stützite
Metallic
Transparency:
Opaque
Colour:
Dark lead-grey, bronze-brown to iridescent (tarnished)
Streak:
Grey-black
Hardness:
3½ on Mohs scale
Cleavage:
None Observed
Optical Data of Stützite
Anisotropism:
Moderate, in gray reddish brown-blue.
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 41.2% | 42.9% |
| 420nm | 41.2% | 42.5% |
| 440nm | 41.2% | 42.0% |
| 460nm | 41.2% | 41.6% |
| 480nm | 41.2% | 41.3% |
| 500nm | 41.1% | 41.1% |
| 520nm | 41.0% | 40.8% |
| 540nm | 40.8% | 40.4% |
| 560nm | 40.7% | 40.0% |
| 580nm | 40.6% | 39.5% |
| 600nm | 40.6% | 39.0% |
| 620nm | 40.6% | 38.7% |
| 640nm | 40.7% | 38.3% |
| 660nm | 40.8% | 37.9% |
| 680nm | 40.9% | 37.4% |
| 700nm | 41.1% | 37.0% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 42.9%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Pale gray.
Chemistry of Stützite
Mindat Formula:
Ag5-xTe3, x = 0.24-0.36
Idealised Ag7Te4
Idealised Ag7Te4
Elements listed:
Crystallography of Stützite
Crystal System:
Hexagonal
Class (H-M):
6 - Trigonal Dipyramidal
Space Group:
P6
Cell Parameters:
a = 13.454(2) Å, c = 8.459(1) Å
Ratio:
a:c = 1 : 0.629
Unit Cell V:
1326 ų
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.16 Å | (100 broad) |
| 2.55 Å | (80 broad) |
| 3.03 Å | (70) |
| 2.62 Å | (70) |
| 3.56 Å | (60) |
| 3.52 Å | (60) |
| 2.11 Å | (60) |
Comments:
May Day mine, Colorado, USA.
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 Stützite
Place of Conservation of Type Material:
No designated type material.
Synonyms of Stützite
Other Language Names for Stützite
Common Associates
Associations Based on Photo Data:
| 4 photos of Stützite associated with Tlapallite | (Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O |
| 4 photos of Stützite associated with Tlalocite | Cu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O |
| 2 photos of Stützite associated with Altaite | PbTe |
| 2 photos of Stützite associated with Azurite | Cu3(CO3)2(OH)2 |
| 1 photo of Stützite associated with Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
| 1 photo of Stützite associated with Pyrite | FeS2 |
| 1 photo of Stützite associated with Chalcopyrite | CuFeS2 |
| 1 photo of Stützite associated with Hessite | Ag2Te |
| 1 photo of Stützite associated with Rucklidgeite | PbBi2Te4 |
| 1 photo of Stützite associated with Volynskite | AgBiTe2 |
Related Minerals - Strunz-mindat Grouping
| 2.BA. | Makotoite | Ag12(Cu3Au)S8 |
| 2.BA. | Alburnite | Ag8GeTe2S4 |
| 2.BA. | Dzierżanowskite | CaCu2S2 |
| 2.BA. | Xuwenyuanite | Ag9Fe3+Te2S4 |
| 2.BA. | 'Orileyite' | (Fe,Cu)2As |
| 2.BA. | Juxingite | Bi6Cu+138Cu2+2Fe3+30S125 |
| 2.BA.05 | Djurleite | Cu31S16 |
| 2.BA.05 | Geerite | Cu8S5 |
| 2.BA.05 | Roxbyite | Cu58S32 |
| 2.BA.05 | Chalcocite | Cu2S |
| 2.BA.10 | Digenite | Cu9S5 |
| 2.BA.10 | Anilite | Cu7S4 |
| 2.BA.15 | Bornite | Cu5FeS4 |
| 2.BA.20 | Bellidoite | Cu2Se |
| 2.BA.20 | Berzelianite | Cu2-xSe (x ≈ 0.12) |
| 2.BA.25 | Athabascaite | Cu5Se4 |
| 2.BA.25 | Umangite | Cu3Se2 |
| 2.BA.30 | Rickardite | Cu7Te5 |
| 2.BA.30 | Weissite | Cu2-xTe |
| 2.BA.35 | Acanthite | Ag2S |
| 2.BA.35 | Spryite | Ag8(As3+0.5As5+0.5)S6 |
| 2.BA.40d | 'UM2003-13-S:AgAuCu' | Ag6AuCu2S5 |
| 2.BA.40 | Mckinstryite | Ag5-xCu3+xS4 |
| 2.BA.40 | Stromeyerite | AgCuS |
| 2.BA.42 | Honeaite | Au3TlTe2 |
| 2.BA.45 | Jalpaite | Ag3CuS2 |
| 2.BA.45 | Selenojalpaite | Ag3CuSe2 |
| 2.BA.45 | Kurilite | Ag8Te3Se |
| 2.BA.47 | Spiridonovite | (Cu1-xAgx)2Te |
| 2.BA.50 | Wuyanzhiite | Cu2S |
| 2.BA.50 | Eucairite | AgCuSe |
| 2.BA.52 | 'Argentite' | Ag2S |
| 2.BA.55 | Naumannite | Ag2Se |
| 2.BA.55 | Aguilarite | Ag4SeS |
| 2.BA.60 | Chenguodaite | Ag9Fe3+Te2S4 |
| 2.BA.60 | Hessite | Ag2Te |
| 2.BA.60 | Cervelleite | Ag4TeS |
| 2.BA.65 | Henryite | (Cu,Ag)3+xTe2 , with x ~ 0.40 |
| 2.BA.70 | Argyrodite | Ag8GeS6 |
| 2.BA.70 | Putzite | (Cu4.7Ag3.3)GeS6 |
| 2.BA.70 | Canfieldite | Ag8SnS6 |
| 2.BA.75 | Fischesserite | Ag3AuSe2 |
| 2.BA.75 | Uytenbogaardtite | Ag3AuS2 |
| 2.BA.75 | Penzhinite | (Ag,Cu)4Au(S,Se)4 |
| 2.BA.75 | Petrovskaite | AuAgS |
| 2.BA.75 | Petzite | Ag3AuTe2 |
| 2.BA.80 | Bezsmertnovite | (Au,Ag)4Cu(Te,Pb) |
| 2.BA.80 | Bilibinskite | PbCu2Au3Te2 |
| 2.BA.80 | Bogdanovite | (Au,Te,Pb)3(Cu,Fe) |
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 Stützite
mindat.org URL:
https://www.mindat.org/min-3813.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Stützite
Reference List:
Schrauf, A. (1878) XVII. Ueber die Tellurerze Siebenbürgens. Zeitschrift für Kristallographie - Crystalline Materials, 2 (1) 209-252 doi:10.1524/zkri.1878.2.1.209
Thompson, R. M., Peacock, M. A., Rowland, J. F., Berry, L. G. (1951) Empressite and "stuetzite". American Mineralogist, 36 (5-6) 458-470
Honea, Russell M. (1964) Empressite and stuetzite redefined. American Mineralogist, 49 (3-4) 325-338
Cabri, L . J. (1965) Discussion of "Empressite and stuetzite redefined" by R. M. Honea. American Mineralogist, 50 (5-6) 795-801
Cabri, Louis J. (1965) Phase relations in the Au-Ag-Te systems and their mineralogical significance. Economic Geology, 60 (8) 1569-1606 doi:10.2113/gsecongeo.60.8.1569
Stumpfl, E. F., Rucklidge, J. (1968) New data on natural phases in the system Ag-Te. American Mineralogist, 53 (9-10) 1513-1522
Criddle, A. J., Stanley, C. J. (1993) Data file. In Quantitative Data File for Ore Minerals. Springer Netherlands. p.1-635. doi:10.1007/978-94-011-1486-8_1p.541
Localities for Stützite
Showing 160 localities.
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Brodtkorb (2002) +1 other reference |
| Paar et al. (2005, January) |
| Brodtkorb et al. (1999) | |
| Brotkorb (2002) +1 other reference | |
| De Brodtkorb (2009) | |
| Mugas Lobos et al. (2011) +1 other reference |
| Esquivel et al. (2016) +1 other reference |
Armenia | |
| Kolpakova et al. (2001) +2 other references |
Atlantic Ocean | |
| Melekestseva et al. (2017) +1 other reference |
Australia | |
| Kalleske (2010) |
| - (2016) +3 other references |
| Shackleton et al. (2003) |
| Simpson (1948) | |
| Hassan et al. (2017) |
Austria | |
| Seemann (1993) +1 other reference |
Bulgaria | |
| Bogdanov et al. (2005) +1 other reference |
Canada | |
| Peatfield (n.d.) |
| Anthony et al. (1990) +1 other reference |
| Neyedley et al. (2017) |
| Duff (2016) |
| Vale SA |
| Ames et al. (2003) |
| R. C. Smith |
| Ames et al. (2003) |
| Can Mineral 1984 22: 13-21 |
| Cabri et al. (1973) +1 other reference |
| Robert C. Smith II Ph.D. P.G. |
| McDonald et al. (2015) |
| Selway (1993) | |
| Robert C. Smith II Ph.D. P.G. |
China | |
| Cui et al. (1996) +1 other reference |
| Yanhe Cui et al. (1994) |
| Gao et al. (2015) +2 other references |
| Jun Lü et al. (2009) +8 other references |
| Vikent'ev et al. (2015, June) |
| preprint |
| Chang et al. (2022) | |
| Jian et al. (2014) |
| Fushan Wang (1991) |
| American Mineralogist 89 +1 other reference |
| Youxun Liu et al. (2003) |
| Yongwei Li et al. (2010) |
| Handong Qian et al. (2000) |
| Zhili Yang et al. (2007) |
| Zhimin Cao (1991) |
| Baohua Li et al. (1999) |
| Benhai Li et al. (1991) |
Cuba | |
| López K Jesús M. et al. (2006) |
Czech Republic | |
| Scharmová (1998) |
| SEJKORA et al. (2026) |
Ethiopia | |
| Billay et al. (1997) +1 other reference |
Fiji | |
| 16th Australian Geological Convention +1 other reference |
| Pals et al. (2003) |
France | |
| Delfour (2007) |
Ghana | |
| Bowell et al. (1990) +1 other reference |
Greece | |
| Voudouris et al. (2018) |
| Voudouris et al. (2013) +1 other reference |
| Voudouris (2006) | |
| Voudouris et al. (2007) +1 other reference | |
| Singer et al. (2008) |
| Voudouris +2 other references | |
| Voudouris +3 other references | |
| Bonev et al. (2005) +2 other references |
India | |
| Sarkar et al. (1996) |
Indonesia | |
| Yuningsih (2010) +2 other references |
Italy | |
| Ruggieri et al. (1997) |
Japan | |
| Matsukuma (1955) |
| Komuro et al. (2017) +1 other reference |
| 田中崇裕・濱根大輔: ... +1 other reference | |
| Takasu (1965) +1 other reference |
Mauritania | |
| Kolb et al. (2006) +2 other references |
Mexico | |
| Anisimov et al. (2001) |
| |
Peru | |
| Bendezu et al. (2009) |
Philippines | |
| Fermor 2011: Ore Deposits in an ... |
Poland | |
| Kozłowski et al. (2022) |
| Nejbert (2008) |
| Singer et al. (2008) |
Romania | |
| Cook et al. (2002) +1 other reference |
| Afifi et al. (1988) +4 other references |
| Simon et al. (1995) |
| Apopei et al. (2016) |
| Săbău et al. (2016) | |
| Ciobanu et al. (2004) +2 other references | |
Russia | |
| Amur Minerals Corporation |
| Maslennikov et al. (2005) +1 other reference |
| Vikentyev (2015) +1 other reference |
| Tseluyko et al. (2019) | |
| Kasatkin et al. (2022) |
| Plotinskaya et al. (2018) |
| Safina et al. (2015) |
| Plotinskaya et al. (2020) |
| Plotinskaya et al. (2020) | |
| Plotinskaya et al. (2014) | |
| Plotinskaya et al. (2020) |
| Vikentyev et al. (2004) +1 other reference |
| Maslennikov et al. (2013) | |
| Mineralogy of the Baimka Cu-Au trend et al. (Trans. Inst. Min. Metall. B) |
| Nagornaya et al. (2012) |
| Chitalin et al. (2023) | |
| Chitalin et al. (2023) | |
| www.igem.ru (2001) +1 other reference |
| Kozlov et al. (n.d.) |
| Azarian et al. (2021) +1 other reference |
| Tamara Yu. Yakich * et al. (2024) +2 other references |
| Sorokhtina et al. (2021) |
| Chashchin et al. (2021) |
| Kalinin (2021) |
| Kalinin (2021) | |
| Чернявский et al. (2013) | |
| Kalinin et al. (2020) |
| Ivashchenko et al. (2011, September) |
| Ivashchenko et al. (2011, September) | |
| Kuleshevich et al. (2012) |
| V. I. Ivashchenko et al. (2007) +1 other reference |
| Leontev et al. (2017) |
| Anisimova et al. (2011) | |
| L.A. Kondrat’eva +2 other references |
| Simon et al. (1997) |
| Stepanov et al. (2023) |
| Mikhailov et al. (2021) |
| Maslennikov et al. (2013) | |
| Stepanov et al. (2023) |
| Kuzhuget et al. (2023) +1 other reference |
| Kuzhuget et al. (2025) | |
Slovakia | |
| Ďuďa (1993) +1 other reference |
| Koděra |
South Africa | |
| Hutchinson et al. (2005) |
South Korea | |
| Econ Geol (1990) |
| Choi et al. (2005) +1 other reference |
| Choi et al. (2005) |
Spain | |
| Cepedal et al. (2004) |
Sweden | |
| Oen et al. (1984) +2 other references |
| |
Tajikistan | |
| Yatimov et al. (2022) |
USA | |
| Anthony et al. (1995) |
| Harris et al. (1984) +3 other references | |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Anthony et al. (1990) | |
| Eckel et al. (1997) | |
| Eckel et al. (1997) |
| Anthony et al. (1990) |
| Sorrell (n.d.) |
| Anthony et al. (1990) | |
| POHL et al. (1990) |
| Anthony et al. (1990) | |
| Anthony et al. (1990) |
| Econ Geol (1994) |
| Spry et al. (1996) |
| Robert C. Smith |
| R.C. Smith |
| Lasmanis (1995) |
| Bart Cannon microprobe analysis |
Uzbekistan | |
| Ashirov et al. (2023) |
| Rustam Koneev et al. (2005) |
| Kovalenker (2003) +1 other reference |
| Anthony et al. (1990) +4 other references | |
Zimbabwe | |
| Afifi et al. (1988) +1 other reference |
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Kawazu mine, Rendaiji, Shimoda City, Shizuoka Prefecture, Japan