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Payún volcano, Altiplano de Payún Matru, Malargüe Department, Mendoza Province, Argentinai
Regional Level Types
Payún volcanoVolcano
Altiplano de Payún Matru- not defined -
Malargüe DepartmentDepartment
Mendoza ProvinceProvince
ArgentinaCountry

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Key
Latitude & Longitude (WGS84):
36° 30' South , 69° 18' West
Latitude & Longitude (decimal):
Locality type:
Name(s) in local language(s):
El Payún Matrú


National Park (collecting strictly prohibited!), just north of the Colorado River (and therefore just outside the formal border of the vast region known as Patagonia) in southern Mendoza.

Famous for giant crystals of hematite pseudomorphs after magnetite, of volcanic fumarole origin.

Regions containing this locality

South America PlateTectonic Plate
South AmericaContinent

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Description: fumarolic
Reference: Alfredo Petrov collection
Anglesite
Formula: PbSO4
Reference: Alfredo Petrov collection
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Description: fumarolic
Reference: Alfredo Petrov collection
Cristobalite
Formula: SiO2
Description: On faces of (and therefore younger than) large hematite crystals.
Reference: PXRD by John Attard.
Fluorapatite
Formula: Ca5(PO4)3F
Description: Prismatic white crystals on magnetite crystals. (PXRD confirmed.)
Reference: Donald A. Dallaire specimen
Hematite
Formula: Fe2O3
Reference: [www.johnbetts-fineminerals.com]
Hematite var: Martite
Formula: Fe2O3
Reference: Van King
Magnetite
Formula: Fe2+Fe3+2O4
Description: fumarolic
Reference: Bill Smith collection; Alfredo Petrov collection
Opal
Formula: SiO2 · nH2O
Description: fumarolic
Reference: Alfredo Petrov collection
Opal var: Opal-AN
Formula: SiO2 · nH2O
Description: fumarolic
Reference: Alfredo Petrov collection
Wulfenite
Formula: Pb(MoO4)
Description: fumarolic?
Reference: Eduardo Jawerbaum (pers. comm.); ID confirmed by John Attard using PXRD and arc spectroscopy.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Cristobalite4.DA.15SiO2
Hematite4.CB.05Fe2O3
var: Martite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Cristobalite75.1.1.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Hematite
var: Martite
-Fe2O3
Opal
var: Opal-AN
-SiO2 · nH2O

List of minerals for each chemical element

HHydrogen
H Opal (var: Opal-AN)SiO2 · nH2O
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H OpalSiO2 · nH2O
OOxygen
O HematiteFe2O3
O MagnetiteFe2+Fe23+O4
O Opal (var: Opal-AN)SiO2 · nH2O
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O AegirineNaFe3+Si2O6
O Hematite (var: Martite)Fe2O3
O WulfenitePb(MoO4)
O FluorapatiteCa5(PO4)3F
O CristobaliteSiO2
O AnglesitePbSO4
O OpalSiO2 · nH2O
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F FluorapatiteCa5(PO4)3F
NaSodium
Na AegirineNaFe3+Si2O6
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
SiSilicon
Si Opal (var: Opal-AN)SiO2 · nH2O
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si AegirineNaFe3+Si2O6
Si CristobaliteSiO2
Si OpalSiO2 · nH2O
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S AnglesitePbSO4
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
CaCalcium
Ca FluorapatiteCa5(PO4)3F
FeIron
Fe HematiteFe2O3
Fe MagnetiteFe2+Fe23+O4
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe AegirineNaFe3+Si2O6
Fe Hematite (var: Martite)Fe2O3
MoMolybdenum
Mo WulfenitePb(MoO4)
PbLead
Pb WulfenitePb(MoO4)
Pb AnglesitePbSO4

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