Erikjonssonite
A valid IMA mineral species
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About Erikjonssonite
Formula:
(Pb32O21)[(V,Si,Mo,As)O4]4Cl9
Colour:
Orange-red
Hardness:
2½
Specific Gravity:
7.967 (Calculated)
Crystal System:
Monoclinic
Name:
In honour of the Swedish mineralogist Dr. Erik Jonsson (b. 1967), Senior Geologist of the Geological Survey of Sweden, Department of Mineral Resources, and Adjunct Professor of the Dept. of Earth Sciences, Uppsala University.
Structurally and chemically related to hereroite. Also chemically related to janchevite, kombatite, and vanadinite.
Unique Identifiers
Mindat ID:
53160
Long-form identifier:
mindat:1:1:53160:3
IMA Classification of Erikjonssonite
Approved
IMA Formula:
(Pb2+32O21)[(V5+,Si,Mo6+,As5+)O4]4Cl9
Approval year:
2018
First published:
2019
Type description reference:
Chukanov, Nikita V., Siidra, Oleg I., Polekhovsky, Yury S., Pekov, Igor V., Varlamov, Dmitry A., Ermolaeva, Vera N., Virus, Alla A. (2019) Erikjonssonite, (Pb32O21)[(V,Si,Mo,As)O4]4Cl9, a new mineral from the Kombat mine and structural classification of layered lead oxychlorides related to litharge. European Journal of Mineralogy, 31 (3) 619-628 doi:10.1127/ejm/2019/0031-2854
Classification of Erikjonssonite
8.BO.50
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
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 |
|---|---|---|
| Ejs | 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 Erikjonssonite
Colour:
Orange-red
Hardness:
2½ on Mohs scale
Hardness:
VHN20=69.5 - 89.3 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Distinct/Good
(010)
(010)
Fracture:
Irregular/Uneven
Density:
7.967 g/cm3 (Calculated)
Optical Data of Erikjonssonite
Anisotropism:
Weak
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 20.7% | 22.3% |
| 420nm | 20.15% | 21.6% |
| 440nm | 19.6% | 21.1% |
| 460nm | 19.1% | 20.6% |
| 470nm | 18.9% | 20.4% |
| 480nm | 18.7% | 20.2% |
| 500nm | 18.2% | 19.7% |
| 520nm | 17.9% | 19.35% |
| 540nm | 17.6% | 19.06% |
| 546nm | 17.6% | 19.0% |
| 560nm | 17.4% | 18.8% |
| 580nm | 17.2% | 18.58% |
| 589nm | 17.1% | 18.5% |
| 600nm | 17.0% | 18.48% |
| 620nm | 16.8% | 18.2% |
| 640nm | 16.7% | 18.1% |
| 650nm | 16.6% | 18.0% |
| 660nm | 16.5% | 17.9% |
| 680nm | 16.35% | 17.7% |
| 700nm | 16.2% | 17.5% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 22.3%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Pale gray
Internal Reflections:
Deep red to brown-red
Chemistry of Erikjonssonite
Mindat Formula:
(Pb32O21)[(V,Si,Mo,As)O4]4Cl9
Element Weights:
Crystallography of Erikjonssonite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 23.200(5) Å, b = 22.708(5) Å, c = 12.418(3) Å
β = 102.167(4)°
β = 102.167(4)°
Ratio:
a:b:c = 1.022 : 1 : 0.547
Unit Cell V:
6,395.17 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.501 Å | (24) |
| 2.980 Å | (100) |
| 2.794 Å | (45) |
| 1.990 Å | (24) |
| 1.977 Å | (21) |
| 1.762 Å | (20) |
| 1.648 Å | (33) |
| 1.598 Å | (18) |
Reference:
Chukanov, Nikita V., Siidra, Oleg I., Polekhovsky, Yury S., Pekov, Igor V., Varlamov, Dmitry A., Ermolaeva, Vera N., Virus, Alla A. (2019) Erikjonssonite, (Pb32O21)[(V,Si,Mo,As)O4]4Cl9, a new mineral from the Kombat mine and structural classification of layered lead oxychlorides related to litharge. European Journal of Mineralogy, 31 (3) 619-628 doi:10.1127/ejm/2019/0031-2854
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Erikjonssonite
General Appearance of Type Material:
Thick tabular, flattened on (010) anhedral to subhedral orange-red grains up to 0.3 x 0.5 x 0.5 mm3 in a polymineral granular aggregate.
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5226/1.
Geological Setting of Type Material:
Regional metamorphism of a primary, Pb–Mn–(As–Ba)-rich, chemically heterogeneous, volcanic hydrothermal assemblage
Associated Minerals at Type Locality:
Reference:
Chukanov, Nikita V., Siidra, Oleg I., Polekhovsky, Yury S., Pekov, Igor V., Varlamov, Dmitry A., Ermolaeva, Vera N., Virus, Alla A. (2019) Erikjonssonite, (Pb32O21)[(V,Si,Mo,As)O4]4Cl9, a new mineral from the Kombat mine and structural classification of layered lead oxychlorides related to litharge. European Journal of Mineralogy, 31 (3) 619-628 doi:10.1127/ejm/2019/0031-2854
Synonyms of Erikjonssonite
Other Language Names for Erikjonssonite
Dutch:Erikjonssoniet
German:Erikjonssonit
Common Associates
Associations Based on Photo Data:
| 3 photos of Erikjonssonite associated with Hausmannite | Mn2+Mn3+2O4 |
| 2 photos of Erikjonssonite associated with Calcite | CaCO3 |
Related Minerals - Strunz-mindat Grouping
| 8.BO. | Ariegilatite | BaCa12(SiO4)4(PO4)2F2O |
| 8.BO. | Aravaite | Ba2Ca18(SiO4)6(PO4)3(CO3)F3O |
| 8.BO. | Theuerdankite | Ag3AsO4 |
| 8.BO.05 | Nacaphite | Na2Ca(PO4)F |
| 8.BO.10 | Petitjeanite | Bi3(PO4)2O(OH) |
| 8.BO.10 | Schumacherite | Bi3(VO4)2O(OH) |
| 8.BO.10 | Preisingerite | Bi3(AsO4)2O(OH) |
| 8.BO.15 | Hechtsbergite | Bi2(VO4)O(OH) |
| 8.BO.15 | Smrkovecite | Bi2(PO4)O(OH) |
| 8.BO.15 | Atelestite | Bi2(AsO4)O(OH) |
| 8.BO.20 | Sahlinite | Pb14(AsO4)2O9Cl4 |
| 8.BO.20 | Kombatite | Pb14(VO4)2O9Cl4 |
| 8.BO.25 | Heneuite | CaMg5(CO3)(PO4)3(OH) |
| 8.BO.30 | Nefedovite | Na5Ca4(PO4)4F |
| 8.BO.35 | Kuznetsovite | [Hg2]2+Hg2+[AsO4]Cl |
| 8.BO.40 | Artsmithite | [Hg2]2+2Al(PO4)1.74(OH)1.78 |
| 8.BO.45 | Schlegelite | Bi7(AsO4)3(MoO4)2O4 |
| 8.BO.50 | Hereroite | [Pb32(O,◻)21](AsO4)2[(Si,As,V,Mo)O4]2Cl10 |
| 8.BO.55 | Rudabányaite | (Ag2Hg2)(AsO4)Cl |
| 8.BO.60 | Segerstromite | Ca3(As5+O4)2[As3+(OH)3]2 |
| 8.BO.65 | Wiklundite | Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2[(Si,As5+)O4]6(OH)18Cl6 |
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 Erikjonssonite
mindat.org URL:
https://www.mindat.org/min-53160.html
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References for Erikjonssonite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2018) CNMNC Newsletter 45, New minerals and nomenclature modifications approved in 2018. Mineralogical Magazine, 82 (5) 1225-1232 doi:10.1180/mgm.2018.160p.1229
Chukanov, Nikita V., Siidra, Oleg I., Polekhovsky, Yury S., Pekov, Igor V., Varlamov, Dmitry A., Ermolaeva, Vera N., Virus, Alla A. (2019) Erikjonssonite, (Pb32O21)[(V,Si,Mo,As)O4]4Cl9, a new mineral from the Kombat mine and structural classification of layered lead oxychlorides related to litharge. European Journal of Mineralogy, 31 (3) 619-628 doi:10.1127/ejm/2019/0031-2854
Localities for Erikjonssonite
Showing 1 localities.
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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.
Namibia (TL) | |
| Chukanov et al. (2019) |
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Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia