Jagoite
A valid IMA mineral species - grandfathered
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About Jagoite
John "Jack" B. Jago
Formula:
Pb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6
Originally thought to be (Pb,Ca)3FeSi3O10(Cl,OH)
Colour:
Yellow-green
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
5.43
Crystal System:
Hexagonal
Name:
Named in honor of John "Jack" Bernard Jago Trelawney (1 April 1909, Livorno, Italy - 2001), lawyer and amateur mineral collector from San Francisco, California, USA. He travelled through Europe and Africa visiting famous localities and assembled what was considered one of the finest private mineral collections in the late 1970s. The name recognizes the research funding he provided to the Swedish Museum of Natural History for the study of LĂ„ngban minerals.
This page provides mineralogical data about Jagoite.
Unique Identifiers
Mindat ID:
2064
Long-form identifier:
mindat:1:1:2064:6
GUID
(UUID V4):
(UUID V4):
90a479be-aa4a-4fb7-a1b5-a3d6c682aad2
IMA Classification of Jagoite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1957
Classification of Jagoite
9.EG.50
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
73.2.1.1
73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
2 : Condensed Tetrahedral Sheets with double and single layers
73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
2 : Condensed Tetrahedral Sheets with double and single layers
17.3.10
17 : Silicates Containing other Anions
3 : Silicates with chloride (including aluminosilicates)
17 : Silicates Containing other Anions
3 : Silicates with chloride (including aluminosilicates)
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Jg | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Jagoite
Vitreous
Transparency:
Translucent
Comment:
Shining on cleavages
Colour:
Yellow-green
Streak:
Yellow
Hardness:
3 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
{0001}
{0001}
Density:
5.43 g/cm3 (Measured)
Optical Data of Jagoite
Type:
Uniaxial (-)
RI values:
nω = 2.000 nε = 1.970
Birefringence:
0.025
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Pleochroism:
Non-pleochroic
Chemistry of Jagoite
Mindat Formula:
Pb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6
Originally thought to be (Pb,Ca)3FeSi3O10(Cl,OH)
Originally thought to be (Pb,Ca)3FeSi3O10(Cl,OH)
Common Impurities:
Ti,Al,Mn,Be,Mg,Ca,Na,K,H2O
Crystallography of Jagoite
Crystal System:
Hexagonal
Class (H-M):
6 m2 - Ditrigonal Dipyramidal
Space Group:
P6c2
Cell Parameters:
a = 8.528(8) Å, c = 33.33(3) Å
Ratio:
a:c = 1 : 3.908
Unit Cell V:
2,099.23 Ă
Âł (Calculated from Unit Cell)
Z:
6
Morphology:
Fine-grained micaceous aggregates.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000843 | Jagoite | Mellini M, Merlino S (1981) The crystal structure of jagoite American Mineralogist 66 852-858 |  | 1981 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.40 Ă | (100) |
| 2.80 Ă | (80) |
| 4.16 Ă | (50) |
| 2.99 Ă | (50) |
| 2.50 Ă | (40) |
| 2.60 Ă | (30) |
| 2.47 Ă | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-đ alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Jagoite
General Appearance of Type Material:
Fine-grained micaceous aggregatesof plates, commonly surrounded by a zone of black melanotekite.
Place of Conservation of Type Material:
n.d.
Associated Minerals at Type Locality:
Reference:
Blix, R., Gabrielson, O., Wickman, F.E. (1957) Jagoite, a new lead-silicate mineral from LÄngban in Sweden. Arkiv för Mineralogi och Geologi: 2: 315-317.
Other Language Names for Jagoite
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Jagoite associated with Kentrolite | Pb2Mn3+2(Si2O7)O2 |
Related Minerals - Strunz-mindat Grouping
| 9.EG.05 | Cymrite | BaAl2Si2(O,OH)8 · H2O |
| 9.EG.10 | Naujakasite | (Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26 |
| 9.EG.10 | Manganonaujakasite | Na6(Mn2+,Fe2+)Al4Si8O26 |
| 9.EG.15 | Dmisteinbergite | Ca(Al2Si2O8) |
| 9.EG.20 | Kampfite | Ba12(Si11Al5)O31(CO3)8Cl5 |
| 9.EG.25 | StrÀtlingite | Ca2Al2SiO7 · 8H2O |
| 9.EG.25 | Vertumnite | Ca4Al4Si4O6(OH)24 · 3H2O |
| 9.EG.30 | Eggletonite | (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O |
| 9.EG.30 | Ganophyllite | (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O |
| 9.EG.30 | Tamaite | (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O |
| 9.EG.35 | Coombsite | KMn2+13(Si,Al)18O42(OH)14 |
| 9.EG.35 | Zussmanite | K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14 |
| 9.EG.40 | Franklinphilite | (K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2O |
| 9.EG.40 | Lennilenapeite | K6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O |
| 9.EG.40 | Parsettensite | (K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O |
| 9.EG.40 | Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| 9.EG.40 | Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| 9.EG.45 | Latiumite | (Ca,K)4(Si,Al)5O11(SO4,CO3) |
| 9.EG.45 | Tuscanite | KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O |
| 9.EG.45 | Levantite | KCa3Al2(SiO4)(Si2O7)(PO4) |
| 9.EG.55 | Wickenburgite | CaPb3Al2Si10O24(OH)6 |
| 9.EG.60 | Hyttsjöite | Pb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2O |
| 9.EG.65 | Armbrusterite | K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O |
| 9.EG.70 | Britvinite | [Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)] |
| 9.EG.70 | Roymillerite | Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5 |
| 9.EG.75 | Bannisterite | (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O |
| 9.EG.75 | UM1989-30-SiO:AlBaCaFeHKMgMn | (Ba,Ca)(Mn,Fe,Mg)22(Si,Al)32O76(OH)16 · 12H2O |
| 9.EG.75 | Kayupovaite | Na2Mn10[(Si14Al2)O38(OH)8] · 7H2O |
Fluorescence of Jagoite
Not fluorescent in UV.
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 Jagoite
mindat.org URL:
https://www.mindat.org/min-2064.html
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Please feel free to link to this page.
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References for Jagoite
Reference List:
Localities for Jagoite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
Sweden (TL) | |
| Arkiv Min.Geol. (1957) +1 other reference |
| Nysten (2004) |
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LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden