Pintadoite
A valid IMA mineral species - grandfathered - questionable
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About Pintadoite
Formula:
Ca2(V2O7) · 9H2O
Colour:
Light to dark green
Name:
After the locality in the Pintado Canyon (Cañon Pintado), Utah, USA. Pronounced peen-ta'-do-ite.
A secondary minerals occurring as efflorescences on sandstone in protected outcrops.
Unique Identifiers
Mindat ID:
3218
Long-form identifier:
mindat:1:1:3218:2
GUID
(UUID V4):
(UUID V4):
d2944a39-fe7b-43ab-a204-d2a159b394e0
IMA Classification of Pintadoite
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
Ca2V5+2O7 · 9H2O
First published:
1914
Classification of Pintadoite
8.FC.15
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only
47.4.3.1
47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
21.2.5
21 : Vanadates (and vanadates with arsenate or phosphate)
2 : Vanadates of Mg, Ca, Sr or Ba
21 : Vanadates (and vanadates with arsenate or phosphate)
2 : Vanadates of Mg, Ca, Sr or Ba
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 |
---|---|---|
Ptd | 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 Pintadoite
Transparency:
Translucent
Colour:
Light to dark green
Optical Data of Pintadoite
Type:
Uniaxial
Pleochroism:
Weak
Comments:
In yellow-greens.
Chemistry of Pintadoite
Mindat Formula:
Ca2(V2O7) · 9H2O
Elements listed:
Crystallography of Pintadoite
Morphology:
Occurs as crusts and stains. Twinned, lathlike crystals result from solution after dissolved in water.
Comment:
No crystallographic data
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47e : [Vanadates, chromates, manganates] |
Type Occurrence of Pintadoite
General Appearance of Type Material:
Efflorescences
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA: #98962. U.S. National Museum of Natural History, Washington, D.C., USA: #R5714, 93657.
Geological Setting of Type Material:
McElmo Sandstone.
Associated Minerals at Type Locality:
Reference:
Hess, F.L. and Schaller, W.T. (1914) Pintadoite and Uvanite, two new vanadium minerals from Utah : A preliminary note. Journal of the Washington Academy of Science: 4: 576-579.
Other Language Names for Pintadoite
Common Associates
Associated Minerals Based on Photo Data:
7 photos of Pintadoite associated with Fernandinite | (Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2O |
Related Minerals - Strunz-mindat Grouping
8.FC.X | Hylbrownite | Na3Mg(P3O10) · 12H2O |
8.FC. | Donowensite | Ca(H2O)3Fe3+2(V2O7)2 |
8.FC.05 | Fianelite | Mn2+2((V,As)2O7) · 2H2O |
8.FC.05 | Rüdlingerite | Mn2+2V5+As5+O7 · 2H2O |
8.FC.10 | Canaphite | Na2Ca(P2O7) · 4H2O |
8.FC.20 | Arnhemite | (K,Na)4Mg2(P2O7)2 · 5H2O |
8.FC.25 | Wooldridgeite | Na2CaCu2+2(P2O7)2 · 10H2O |
8.FC.30 | Kanonerovite | Na3Mn2+(P3O10) · 12H2O |
8.FC.35 | Mesaite | CaMn2+5(V2O7)3 · 12H2O |
Other Information
Notes:
Slowly soluble in water.
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 Pintadoite
mindat.org URL:
https://www.mindat.org/min-3218.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Pintadoite
Reference List:
Localities for Pintadoite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Canada | |
| Currie (1980) |
USA | |
| Scarborough (1981) |
| Galbraith (1959) |
| Scarborough (1981) |
Galbraith (1959) +1 other reference | |
Galbraith (1959) +1 other reference | |
| Scarborough (1981) |
| Eckel et al. (1997) |
| Collected by and in the collection of ... |
| Palache et al. (1944) |
| Min News (1987) |
| Castor et al. (2004) |
| DANA R. KELLEY AND PAUL F. KERR (1958) |
| Observed on the ore pile |
| Hess et al. (1914) |
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Frisco No. 2 claim, Pintado Canyon, San Juan County, Utah, USA