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Jaszczakite

A valid IMA mineral species
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02061380017272472925228.jpg
Jaszczakite

Alsó-Rózsa adit, Nagybörzsöny, Szob District, Pest County, Hungary
02061380017272472925228.jpg
Jaszczakite

Alsó-Rózsa adit, Nagybörzsöny, Szob District, Pest County, Hungary
02061380017272472925228.jpg
Jaszczakite

Alsó-Rózsa adit, Nagybörzsöny, Szob District, Pest County, Hungary
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About JaszczakiteHide

07658970017272472921155.jpg
John A. Jaszczak
Formula:
[Bi3S3][AuS2]
Type material contains considerable Pb replacing Bi (Bi2.18Pb0.78).
Colour:
Tin-white
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
7.237 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Dr. John Anthony Jaszczak (b. 10 July 1961, Garfield Heights, Ohio, USA), professor of Physics and adjunct curator of the A.E. Seaman Mineral Museum, Michigan Tech., Michigan, USA.
Isostructural with:
Buckhornite
The S-Bi analogue of buckhornite. Chemically related to jonassonite.


Unique IdentifiersHide

Mindat ID:
50783
Long-form identifier:
mindat:1:1:50783:7

IMA Classification of JaszczakiteHide

Classification of JaszczakiteHide

Strunz-mindat (2026):
2.HB.20b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb

Mineral SymbolsHide

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

SymbolSourceReference for Standard
JzzIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of JaszczakiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Tin-white
Streak:
Black
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN5=115 - 132 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Irregular/Uneven
Density:
7.237 g/cm3 (Calculated)
Comment:
Calculated from the empirical formula

Optical Data of JaszczakiteHide

Anisotropism:
Distinct, shades of green and purple
Bireflectance:
Weak
Reflectivity:
WavelengthR1 (%)R2 (%)
471nm49.4% 50.9%
548nm47.1% 48.8%
586nm46.5% 47.7%
652nm48.8% 49.5%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 50.9%.
R1 shown in black, R2 shown in red
Internal Reflections:
None
Pleochroism:
Weak
Comments:
Light grey to a slightly bluish grey

Chemistry of JaszczakiteHide

Mindat Formula:
[Bi3S3][AuS2]

Type material contains considerable Pb replacing Bi (Bi2.18Pb0.78).
Element Weights:
Element% weight
Bi63.699 %
S16.289 %

Calculated from ideal end-member formula.
Elements listed:
Au, Bi, S - search for minerals with similar chemistry

Crystallography of JaszczakiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmmn
Cell Parameters:
a = 3.858(1) Å, b = 12.552(3) Å, c = 9.289(2) Å
Ratio:
a:b:c = 0.307 : 1 : 0.74
Unit Cell V:
449.83 ų
Z:
2

X-Ray Powder DiffractionHide

Geological EnvironmentHide

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

Type Occurrence of JaszczakiteHide

Type Locality:
ⓘ Alsó-Rózsa adit, Nagybörzsöny, Szob District, Pest County, Hungary
General Appearance of Type Material:
A very rare mineral in a single polished section. Subhedral to anhedral grains with a maximum size of 250 µm.
Place of Conservation of Type Material:
Mineralogical collections of the Museo di Storia Naturale, Università di Firenze, Via La Pira 4, I-50121, Firenze, Italy (catalogue number 3237/I).
Associated Minerals at Type Locality:
ArsenopyriteNative BismuthBismuthiniteChalcopyriteCosalite
Native GoldIkunoliteJonassoniteMarcasitePyrite
QuartzSphalerite
Reference:
Bindi, Luca, Paar, Werner H. (2017) Jaszczakite, [(Bi,Pb)3S3][AuS2], a new mineral species from Nagybörzsöny, Hungary. European Journal of Mineralogy, 29 (4). 673-677 doi:10.1127/ejm/2017/0029-2620

Synonyms of JaszczakiteHide

Other Language Names for JaszczakiteHide

Related Minerals - Strunz-mindat GroupingHide

2.HB.BarikaiteAg3Pb10(Sb8As11)S40Mon. 2/m : P21/b
2.HB.Carducciite(Ag2Sb2)Pb12(As,Sb)16S40Mon. 2/m : P21/b
2.HB.SardashtiteAg9Cu2.5Pb41Sb36.5As7S112Mon. 2/m
2.HB.InterliveingiteAgPb18As25S56Mon. 2 : P21
2.HB.ReckibachiteAg2Pb12As14Sb4S40Mon. 2/m : P21/b
2.HB.05aSalzburgiteCu1.6Pb1.6Bi6.4S12Orth. mm2 : Pmc21
2.HB.05aHammariteCu2Pb2Bi4S9Orth.
2.HB.05cJaskólskiiteCuxPb2+x(Sb,Bi)2-xS5 (x ~ 0.15)Orth. mmm (2/m 2/m 2/m)
2.HB.05'UM1990-54-Se:BiCuPb'CuPb(Ni,Co)0.3Bi3Se6
2.HB.05aAikiniteCuPbBiS3Orth. mmm (2/m 2/m 2/m) : Pnma
2.HB.05aPekoiteCuPbBi11S18Orth. mm2
2.HB.05aFriedrichiteCu5Pb5Bi7S18Orth. mm2
2.HB.05bMeneghinitePb13CuSb7S24Orth. mmm (2/m 2/m 2/m)
2.HB.05aPaariteCu1.7Pb1.7Bi6.3S12Orth. mmm (2/m 2/m 2/m) : Pbcn
2.HB.05aLindströmiteCu3Pb3Bi7S15Orth. mmm (2/m 2/m 2/m)
2.HB.05aEmiliteCu10.7Pb10.7Bi21.3S48Orth. mm2 : Pmc21
2.HB.05aGladiteCuPbBi5S9Orth. mmm (2/m 2/m 2/m)
2.HB.05aKrupkaiteCuPbBi3S6Orth. mm2
2.HB.05'UM2000-46-S:BiCuPb'Cu0.33Pb0.33Bi7.67S12
2.HB.10bIzoklakeitePb27(Cu,Fe,Ag)2(Sb,Bi)19S57Orth. mmm (2/m 2/m 2/m) : Pnnm
2.HB.10cEclarite(Cu,Fe)Pb9Bi12S28Orth. mmm (2/m 2/m 2/m) : Pnma
2.HB.10aTintinaitePb22Cu4(Sb,Bi)30S69Orth. mmm (2/m 2/m 2/m) : Pnnm
2.HB.10bGiessenitePb27Cu2(Bi,Sb)19S57Mon. 2/m
2.HB.10aKobellitePb22Cu4(Bi,Sb)30S69Orth. mmm (2/m 2/m 2/m) : Pnnm
2.HB.15JamesonitePb4FeSb6S14Mon. 2/m : P21/b
2.HB.15BenavidesitePb4MnSb6S14Mon. 2/m : P21/b
2.HB.20aNagyágite[Pb3(Pb,Sb)3S6](Au,Te)3Mon. 2/m : P21/m
2.HB.20bBuckhorniteAuPb2BiTe2S3Orth. mmm (2/m 2/m 2/m) : Pmmm
2.HB.20eLuxembourgiteAgCuPbBi4Se8Mon. 2/m : P21/m
2.HB.20dBerryiteCu3Ag2Pb3Bi7S16Mon. 2/m : P21/m
2.HB.20eWatkinsoniteCu2PbBi4(Se,S,Te)8Mon. 2/m : P21/m
2.HB.20cMuseumite[Pb2(Pb,Sb)2S8][(Te,Au)2]Mon. 2
2.HB.20eLitochlebiteAg2PbBi4Se8Mon. 2/m : P21/m
2.HB.25Meerschautite(Ag,Cu)6Pb43-2xSb44+2xS112Ox (x ~0.5)Mon. 2 : P21

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 JaszczakiteHide

References for JaszczakiteHide

Localities for JaszczakiteHide

Showing 1 localities.

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.
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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.
Hungary (TL)
 
  • Pest County
    • Szob District
      • Nagybörzsöny
Hålenius et al. (2016) +3 other references
Quick NavTopAbout JaszczakiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
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