Welinite Group
A group of related mineral species
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About Welinite Group
Formula:
M22+6(M1aM1b)x+(SiO4)2O(x-2)(OH)(8-x)
X is the total charge pfu at the M1 sites
M2 = Mn2+
M1= W6+☐, V5+☐, Sb5+Fe3+, Sb5+☐ or Nb5+☐
M2 = Mn2+
M1= W6+☐, V5+☐, Sb5+Fe3+, Sb5+☐ or Nb5+☐
This page provides mineralogical data about Welinite Group.
Unique Identifiers
Mindat ID:
52151
Long-form identifier:
mindat:1:1:52151:8
IMA Classification of Welinite Group
IMA status notes:
IMA Approved Group Name
Approval year:
2018
Approval history:
Established and approved by IMA in april 2018 (Nomenclature proposals).
Chemistry of Welinite Group
Mindat Formula:
M22+6(M1aM1b)x+(SiO4)2O(x-2)(OH)(8-x)
X is the total charge pfu at the M1 sites
M2 = Mn2+
M1= W6+☐, V5+☐, Sb5+Fe3+, Sb5+☐ or Nb5+☐
X is the total charge pfu at the M1 sites
M2 = Mn2+
M1= W6+☐, V5+☐, Sb5+Fe3+, Sb5+☐ or Nb5+☐
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) |
|---|---|---|---|---|---|---|---|
| 0014805 | Franciscanite | Pertlik F (1986) The crystal structure of franciscanite, Mn3(Vx_1-x)(SiO4)(O,OH)3,(x ~ 0.5) California, USA Neues Jahrbuch fur Mineralogie, Monatshefte 1986 493-499 | 1986 | Franciscan Complex, Pennsylvania mine, Santa Clara County, | 0 | 293 | |
| 0012047 | Welinite | Moore P B (1969) The crystal structure of welinite (Mn+4,W)<1(Mn+2,W,Mg)<3Si(O,OH)7 Arkiv for Mineralogi och Geologi 4 459-466 | 1969 | Langban, Sweden | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Welinite Group to other Species
Welinite Group Members:
| Barwoodite | Mn2+6Nb5+(SiO4)2O3(OH)3 | Trig. 3 : P3 |
| Franciscanite | Mn2+6(V5+,◻)2(SiO4)2(O,OH)6 | Trig. 3 : P3 |
| Örebroite | Mn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3 | Trig. 3 : P3 |
| Scorticoite | Mn6(Sb,◻)Σ2(SiO4)2O3(OH)3 | Trig. 3 : P3 |
| Welinite | Mn2+6(W6+,Mg)2(SiO4)2(O,OH)6 | Trig. 3 : P3 |
Click on any node to view relationships. Formula-derived relationship network for the group members above. Use Find related species to add formula-neighbour species outside the current group view. Solid links show inferred chemical differences; dashed violet links show same-formula crystallographic differences. Hydration states are not treated as relationship changes. These relationships do not imply any real-world substitution reactions between these species.
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 Welinite Group
mindat.org URL:
https://www.mindat.org/min-52151.html
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Please feel free to link to this page.
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References for Welinite Group
Localities for Welinite Group
Showing 24 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.
France | |
| [Welinite] De Ascenção Guedes et al. (2002) |
| [Welinite] Brugger et al. (1999) |
| [Welinite] Ragu (1994) +2 other references |
| [Welinite] BRGM (1981) |
Italy | |
| [Franciscanite] Balestra et al. (2009) |
| [Scorticoite, Welinite] Biagioni et al. (2025) |
Japan | |
| [Welinite] Hirowatari et al. (1988) |
| [Welinite] Mem. Fac. Sci. et al. (2000) |
| [Franciscanite] Yamada et al (2000) |
| [Welinite] Hirowatari et al. (1988) |
| [Welinite] Hirowatari et al. (1988) |
South Africa | |
| [Welinite] Fosso-Kankeu et al. (2015, November) |
Spain | |
| [Franciscanite] Dill et al. (2023) |
| [Franciscanite] Dill et al. (2023) | |
Sweden | |
| [Welinite, Örebroite] Dunn et al. (1986) +1 other reference |
| [Welinite] Moore (1968) +1 other reference |
| [Welinite] Gustafsson (2003) | |
USA | |
| [Barwoodite] Hålenius et al. (2017) +2 other references |
| [Barwoodite] Steve Stuart collection- collected by ... | |
| [Welinite, Örebroite] Flohr et al. (1992) |
| [Franciscanite] Dunn et al. (1986) +1 other reference |
Big Rock Quarry, Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA