Jordisite
A valid IMA mineral species - grandfathered
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About Jordisite
Formula:
MoS2
Colour:
black, blue grey
Lustre:
Sub-Metallic, Dull
Hardness:
1 - 2
Crystal System:
Amorphous
Name:
After Eduard Friedrich Alexander Jordis (1868-1917), colloid chemist.
Dimorph of:
Although generally thought to be amorphous, jordisite gives electron diffraction powder patterns (SAED). It has layered structure, and the layer spacing is ca. 6Å as in molybdenite (Kao et al., 2001).
Compare UM2001-03-C:MoS, which has a very similar structural signature: a sequence of curved layers comprising subspherical units.
Compare UM2001-03-C:MoS, which has a very similar structural signature: a sequence of curved layers comprising subspherical units.
Unique Identifiers
Mindat ID:
2114
Long-form identifier:
mindat:1:1:2114:8
IMA Classification of Jordisite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Mo4+S2-2
Classification of Jordisite
2.EA.30
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
A : M:S = 1:2 - With Cu, Ag, Au
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
A : M:S = 1:2 - With Cu, Ag, Au
2.12.11.1
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.8.8
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
8 : Sulphides etc. of Cr, Mo, W an Mn
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
8 : Sulphides etc. of Cr, Mo, W an Mn
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 |
|---|---|---|
| Jds | 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 Jordisite
Sub-Metallic, Dull
Transparency:
Opaque
Colour:
Black, blue grey
Streak:
Grey, blue grey
Hardness:
1 - 2 on Mohs scale
Tenacity:
Sectile
Fracture:
Conchoidal
Chemistry of Jordisite
Mindat Formula:
MoS2
Elements listed:
Crystallography of Jordisite
Crystal System:
Amorphous
Morphology:
Massive, as associations of colloidal-sized particles and disseminations.
Comment:
Amorphous
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3b: Earth’s earliest hydrosphere | >4.45 |
| 12 : Hadean hydrothermal subsurface sulfide deposits (see also #33) |
Type Occurrence of Jordisite
Place of Conservation of Type Material:
Mining Academy, Freiberg, Germany
Other Language Names for Jordisite
Common Associates
Associations Based on Photo Data:
| 20 photos of Jordisite associated with Ilsemannite | Mo3O8 · nH2O |
| 4 photos of Jordisite associated with Anglesite | PbSO4 |
| 4 photos of Jordisite associated with Cinnabar | HgS |
| 3 photos of Jordisite associated with Molybdenite | MoS2 |
| 3 photos of Jordisite associated with Zhenruite | (MoO3)2 · H2O |
| 2 photos of Jordisite associated with Kamiokite | Fe2Mo3O8 |
| 2 photos of Jordisite associated with Alunogen | Al2(SO4)3 · 17H2O |
| 2 photos of Jordisite associated with Chalcanthite | CuSO4 · 5H2O |
| 1 photo of Jordisite associated with Sidwillite | MoO3 · 2H2O |
| 1 photo of Jordisite associated with Raydemarkite | MoO3 · H2O |
Related Minerals - Strunz-mindat Grouping
| 2.EA. | Radvaniceite | GeS2 |
| 2.EA. | Zavyalovite | Ag2TeS3 |
| 2.EA.05 | Sylvanite | AgAuTe4 |
| 2.EA.10 | Calaverite | AuTe2 |
| 2.EA.15 | Kostovite | CuAuTe4 |
| 2.EA.15 | Krennerite | Au3AgTe8 |
| 2.EA.20 | Melonite | NiTe2 |
| 2.EA.20 | Merenskyite | PdTe2 |
| 2.EA.20 | Ognitite | NiBiTe |
| 2.EA.20 | Shuangfengite | IrTe2 |
| 2.EA.20 | Berndtite | SnS2 |
| 2.EA.20 | Sudovikovite | PtSe2 |
| 2.EA.20 | Kitkaite | NiTeSe |
| 2.EA.20 | Moncheite | Pt(Te,Bi)2 |
| 2.EA.25 | Verbeekite | PdSe2 |
| 2.EA.30 | Drysdallite | MoSe2 |
| 2.EA.30 | Molybdenite | MoS2 |
| 2.EA.30 | Tungstenite | WS2 |
| 2.EA.40 | Pampaloite | AuSbTe |
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 Jordisite
mindat.org URL:
https://www.mindat.org/min-2114.html
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References for Jordisite
Reference List:
Clark, Alan H. (1971) Molybdenite 2H1, molybdenite 3R, and jordisite from Carrizal Alto, Atacama, Chile. American Mineralogist, 56 (9-10). 1832-1834
Kao, Li-Shun, Peacor, Donald R., Coveney, Raymond M., Zhao, Gengmei, Dungey, Keenan E., Curtis, M. David, Penner-Hahn, James E. (2001) A C/MoS2mixed-layer phase (MoSC) occurring in metalliferous black shales from southern China, and new data on jordisite. American Mineralogist, 86 (7) 852-861 doi:10.2138/am-2001-0708
Localities for Jordisite
Showing 126 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.
Barbora adit, Knöttel area, Krupka, Teplice District, Ústí nad Labem Region, Czech Republic