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
GUID
(UUID V4):
(UUID V4):
2736362d-ede2-41a9-931d-ffa10839bdf4
IMA Classification of Jordisite
Approved, 'Grandfathered' (first described prior to 1959)
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 |
|---|---|---|
| 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
Reference:
F. Cornu (1909): Natürliches kolloides Molybdänsulfid (Jordisit).- Zeitschrift für Chemie und Industrie der Kolloide 4, 190.
Other Language Names for Jordisite
Common Associates
Associated Minerals Based on Photo Data:
| 15 photos of Jordisite associated with Ilsemannite | Mo3O8 · nH2O |
| 2 photos of Jordisite associated with Cinnabar | HgS |
| 1 photo of Jordisite associated with Chistyakovaite | Al(UO2)2(AsO4)2(F,OH) · 6.5H2O |
| 1 photo of Jordisite associated with Raydemarkite | MoO3 · H2O |
| 1 photo of Jordisite associated with Sidwillite | MoO3 · 2H2O |
| 1 photo of Jordisite associated with Molybdite | MoO3 |
| 1 photo of Jordisite associated with Baryte | BaSO4 |
| 1 photo of Jordisite associated with Zhenruite | (MoO3)2 · H2O |
| 1 photo of Jordisite associated with Pyrite | FeS2 |
| 1 photo of Jordisite associated with Gypsum | CaSO4 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 2.EA. | Radvaniceite | GeS2 |
| 2.EA.05 | Sylvanite | AgAuTe4 |
| 2.EA.10 | Calaverite | AuTe2 |
| 2.EA.15 | Kostovite | CuAuTe4 |
| 2.EA.15 | Krennerite | Au3AgTe8 |
| 2.EA.20 | Berndtite | SnS2 |
| 2.EA.20 | Kitkaite | NiTeSe |
| 2.EA.20 | Melonite | NiTe2 |
| 2.EA.20 | Merenskyite | PdTe2 |
| 2.EA.20 | Moncheite | Pt(Te,Bi)2 |
| 2.EA.20 | Shuangfengite | IrTe2 |
| 2.EA.20 | Sudovikovite | PtSe2 |
| 2.EA.20 | Ognitite | NiBiTe |
| 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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External Links:
References for Jordisite
Localities for Jordisite
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.
Glückauf Shaft, Himmelsfürst Mine, Brand-Erbisdorf, Mittelsachsen, Saxony, Germany