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Hitachiite
A valid IMA mineral species
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About Hitachiite
Formula:
Pb5Bi2Te2S6
Colour:
silver gray
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
7.54 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
Named for the Hitachi mine, Japan, the type locality.
This page provides mineralogical data about Hitachiite.
Unique Identifiers
Mindat ID:
53045
Long-form identifier:
mindat:1:1:53045:5
IMA Classification of Hitachiite
Approved
IMA Formula:
Pb2+5Bi3+2Te2-2S2-6
Approval year:
2018
First published:
2019
Type description reference:
Classification of Hitachiite
2.DC.05
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
C : Variable M:S
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
C : Variable M:S
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Hit | 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 Hitachiite
Metallic
Transparency:
Opaque
Colour:
Silver gray
Streak:
Black
Hardness:
2½ - 3 on Mohs scale
Density:
7.54 g/cm3 (Calculated)
Optical Data of Hitachiite
Anisotropism:
Weak
Bireflectance:
Weak
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 470nm | 38.5% | 41.8% |
| 546nm | 38.8% | 41.5% |
| 589nm | 38.4% | 41.1% |
| 650nm | 38.1% | 40.7% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 41.8%.
R1 shown in black, R2 shown in red
Internal Reflections:
None
Pleochroism:
Non-pleochroic
Chemistry of Hitachiite
Mindat Formula:
Pb5Bi2Te2S6
Element Weights:
Elements listed:
Crystallography of Hitachiite
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3m1
Cell Parameters:
a = 4.220(1) Å, c = 27.02(4) Å
Ratio:
a:c = 1 : 6.403
Unit Cell V:
416.72 ų (Calculated from Unit Cell)
Z:
1
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.541 Å | (35) |
| 3.391 Å | (59) |
| 3.039 Å | (100) |
| 2.177 Å | (14) |
| 2.114 Å | (56) |
| 2.040 Å | (11) |
| 1.793 Å | (18) |
| 1.735 Å | (18) |
Reference:
Comments:
From Type Description.
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 Hitachiite
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the National Museum of Nature and Science, Tokyo, Japan, registration number NSM-M45821
Geological Setting of Type Material:
VMS deposit
Associated Minerals at Type Locality:
Synonyms of Hitachiite
Other Language Names for Hitachiite
Dutch:Hitachiiet
German:Hitachiit
Relationship of Hitachiite to other Species
Member of:
Other Members of Aleksite Group:
| Aleksite | PbBi2Te2S2 | Trig. 3m(32/m) : P31m |
| Babkinite | Pb2Bi2(S,Se)3 | Trig. |
| Clogauite | PbBi4Te4S3 | Trig. 3m(32/m) : P3m1 |
| Kochkarite | PbBi4Te7 | Trig. |
| Poubaite | PbBi2(Se,Te,S)4 | Trig. 3m(32/m) : R3m |
| Rucklidgeite | PbBi2Te4 | Trig. 3m(32/m) : R3m |
| Saddlebackite | Pb2Bi2Te2S3 | Hex. |
Common Associates
Associations Based on Photo Data:
| 1 photo of Hitachiite associated with Pyrite | FeS2 |
| 1 photo of Hitachiite associated with Chalcopyrite | CuFeS2 |
Related Minerals - Strunz-mindat Grouping
| 2.DC.05 | Laitakarite | Bi4(Se,S)3 |
| 2.DC.05 | Paraguanajuatite | Bi2Se3 |
| 2.DC.05 | Telluronevskite | Bi3TeSe2 |
| 2.DC.05 | Hedleyite | Bi7Te3 |
| 2.DC.05 | Tellurantimony | Sb2Te3 |
| 2.DC.05 | 'Joséite' | Bi4TeS2 |
| 2.DC.05 | Tellurobismuthite | Bi2Te3 |
| 2.DC.05 | Joséite-A | Bi4TeS2 |
| 2.DC.05 | Joséite-B | Bi4Te2S |
| 2.DC.05 | Nevskite | Bi(Se,S) |
| 2.DC.05 | Tetradymite | Bi2Te2S |
| 2.DC.05 | 'Protojoséite' | Bi3(Te,S)2 |
| 2.DC.05 | Skippenite | Bi2TeSe2 |
| 2.DC.05 | Kawazulite | Bi2Te2Se |
| 2.DC.05 | 'UM1983-09-S:BiPbTe' | PbBi3S2Te |
| 2.DC.05 | Pilsenite | Bi4Te3 |
| 2.DC.05 | 'Sztrókayite' | Bi3TeS2 |
| 2.DC.05 | Baksanite | Bi6Te2S3 |
| 2.DC.05 | 'Joséite-C' | Bi16Te3S9 |
| 2.DC.05 | Vihorlatite | Bi24Se17Te4 |
| 2.DC.05 | Tsumoite | BiTe |
| 2.DC.05 | Ikunolite | Bi4S3 |
| 2.DC.05 | Ehrigite | Bi8Te3 |
| 2.DC.05 | Ingodite | Bi2TeS |
| 2.DC.05 | Sulphotsumoite | Bi3Te2S |
| 2.DC.15 | 'Castaingite' | CuMo2S5 |
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 Hitachiite
mindat.org URL:
https://www.mindat.org/min-53045.html
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External Links:
Mineral Dealers:
References for Hitachiite
Reference List:
Hålenius, Ulf, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2018) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 44. European Journal of Mineralogy, 30 (4) 877-882 doi:10.1127/ejm/2018/0030-2787p.879
Localities for Hitachiite
Showing 2 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.
Japan (TL) | |
| Hålenius et al. (2018) +2 other references |
Russia | |
| Kasatkin et al. (2022) |
Quick NavTopAbout HitachiiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Fudotaki deposit, Hitachi Mine, Hitachi-machi, Taga District, Ibaraki Prefecture, Japan