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Izalco Volcano, Sonsonate Department, El Salvadori
Regional Level Types
Izalco VolcanoStratovolcano (Active)
Sonsonate DepartmentDepartment
El SalvadorCountry

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PhotosMapsSearch
03298000017056031338337.jpg
Izalco stratovolcano

Izalco Volcano, Sonsonate Department, El Salvador
07700250017056031411195.jpg
Izalco from Santa Ana

Izalco Volcano, Sonsonate Department, El Salvador
09400000017056031481428.jpg
Fumarolic activity at Izalco

Izalco Volcano, Sonsonate Department, El Salvador
03298000017056031338337.jpg
Izalco stratovolcano

Izalco Volcano, Sonsonate Department, El Salvador
07700250017056031411195.jpg
Izalco from Santa Ana

Izalco Volcano, Sonsonate Department, El Salvador
09400000017056031481428.jpg
Fumarolic activity at Izalco

Izalco Volcano, Sonsonate Department, El Salvador
03298000017056031338337.jpg
Izalco stratovolcano

Izalco Volcano, Sonsonate Department, El Salvador
07700250017056031411195.jpg
Izalco from Santa Ana

Izalco Volcano, Sonsonate Department, El Salvador
Latitude & Longitude (WGS84):
13° 48' 49'' North , 89° 37' 57'' West
Latitude & Longitude (decimal):
13.81366,-89.63264
GeoHash:
G#: d42q86ew2
GRN:
N10W61
Type:
Stratovolcano (Active) - last checked 2020
Köppen climate type:
Aw : Tropical savanna, wet
Mindat Locality ID:
824
Long-form identifier:
mindat:1:2:824:5
GUID (UUID V4):
732134e2-38a3-4485-b7ff-cdf4b94c3eec


The volcano was almost continuously active from its birth in 1770 until 1958. Since then only a brief, very small flank eruption in 1966 has interrupted dormancy. Pre-1966 Izalco lavas are vesicular vitrophyric olivine basalts, usually with bytownite phenocrysts and augite.

Many new minerals have been found in the fumaroles and fumarolic sublimates which are unusually rich in vanadium.

Stoiber and Rose (1974) reported a couple unknown minerals that may have since been described, but a comparison of x-ray patterns is needed:
Fe2(SO4)3 with an X-ray pattern matching ASTM 14-253. Possibly mikasaite?
KAl(SO4)2 with an X-ray pattern matching ATSM 3-337. Possibly steklite?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


31 valid minerals. 8 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
ⓘ Anglesite
Formula: PbSO4
ⓘ Anhydrite
Formula: CaSO4
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ Aphthitalite
Formula: (K,Na)3Na(SO4)2
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Bannermanite (TL)
Formula: (Na,K)0.7V4+0.7V5+5.3O15
Type Locality:
ⓘ Blödite
Formula: Na2Mg(SO4)2 · 4H2O
ⓘ Blossite (TL)
Formula: α-Cu2(V2O7)
Type Locality:
ⓘ Chalcanthite
Formula: CuSO4 · 5H2O
ⓘ Chalcocyanite
Formula: CuSO4
ⓘ Chloraluminite
Formula: AlCl3 · 6H2O
ⓘ Cristobalite
Formula: SiO2
ⓘ Euchlorine
Formula: KNaCu3(SO4)3O
ⓘ 'Fayalite-Forsterite Series'
ⓘ Fingerite (TL)
Formula: Cu11(VO4)6O2
Type Locality:
ⓘ Fluorite
Formula: CaF2
ⓘ Halite
Formula: NaCl
ⓘ Halotrichite
Formula: FeAl2(SO4)4 · 22H2O
ⓘ Hematite
Formula: Fe2O3
ⓘ Hexahydrite
Formula: MgSO4 · 6H2O
ⓘ Howardevansite (TL)
Formula: NaCuFe2(VO4)3
Type Locality:
ⓘ Hydrokenoralstonite
Formula: Na0.5(Al,Mg)2(F,OH)6 · H2O
ⓘ 'Hydrophilite'
ⓘ 'Hypersthene'
Formula: (Mg,Fe)SiO3
ⓘ Langbeinite
Formula: K2Mg2(SO4)3
ⓘ Lyonsite (TL)
Formula: Cu3Fe4(VO4)6
Type Locality:
Description: Fumarolic sublimate.
ⓘ Mcbirneyite (TL)
Formula: Cu3(VO4)2
Type Locality:
Description: From the "Y" fumarole
ⓘ Patrónite
Formula: VS4
Description: Perfect relation V:S 1:4 EDS. 2 mm sample labeled as fingerite, but no copper species detected.
ⓘ Shcherbinaite
Formula: V5+2O5
ⓘ Stoiberite (TL)
Formula: Cu5(VO4)2O2
Type Locality:
ⓘ Sylvite
Formula: KCl
ⓘ Thénardite
Formula: Na2SO4
ⓘ 'UM1980-18-VO:Cu'
Formula: Cu4V2O9
ⓘ Ziesite (TL)
Formula: β-Cu2(V2O7)
Type Locality:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPatrónite2.EC.10VS4
Group 3 - Halides
ⓘHalite3.AA.20NaCl
ⓘSylvite3.AA.20KCl
ⓘFluorite3.AB.25CaF2
ⓘChloraluminite3.BC.05AlCl3 · 6H2O
ⓘHydrokenoralstonite3.CF.05 Na0.5(Al,Mg)2(F,OH)6 · H2O
Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘCristobalite4.DA.15SiO2
ⓘShcherbinaite4.HE.10V5+2O5
ⓘBannermanite (TL)4.HF.05(Na,K)0.7V4+0.7V5+5.3O15
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘChalcocyanite7.AB.10CuSO4
ⓘLangbeinite7.AC.10K2Mg2(SO4)3
ⓘAphthitalite7.AC.35(K,Na)3Na(SO4)2
ⓘThénardite7.AD.25Na2SO4
ⓘAnhydrite7.AD.30CaSO4
ⓘAnglesite7.AD.35PbSO4
ⓘEuchlorine7.BC.30KNaCu3(SO4)3O
ⓘChalcanthite7.CB.20CuSO4 · 5H2O
ⓘHexahydrite7.CB.25MgSO4 · 6H2O
ⓘHalotrichite7.CB.85FeAl2(SO4)4 · 22H2O
ⓘBlödite7.CC.50Na2Mg(SO4)2 · 4H2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘMcbirneyite (TL)8.AB.35Cu3(VO4)2
ⓘLyonsite (TL)8.AB.40Cu3Fe4(VO4)6
ⓘHowardevansite (TL)8.AC.05NaCuFe2(VO4)3
ⓘStoiberite (TL)8.BB.75Cu5(VO4)2O2
ⓘFingerite (TL)8.BB.80Cu11(VO4)6O2
ⓘBlossite (TL)8.FA.05α-Cu2(V2O7)
ⓘZiesite (TL)8.FA.10β-Cu2(V2O7)
Group 9 - Silicates
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘAnorthite
var. Labradorite		9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘAlbite
var. Andesine		9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
ⓘAnorthite
var. Bytownite		9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘ9.FA.35Ca(Al2Si2O8)
Unclassified
ⓘ'Hypersthene'-(Mg,Fe)SiO3
ⓘ'Hydrophilite'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'UM1980-18-VO:Cu'-Cu4V2O9

List of minerals for each chemical element

HHydrogen
Hⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Hⓘ ChalcanthiteCuSO4 · 5H2O
Hⓘ ChloraluminiteAlCl3 · 6H2O
Hⓘ HalotrichiteFeAl2(SO4)4 · 22H2O
Hⓘ HexahydriteMgSO4 · 6H2O
Hⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Oⓘ AnglesitePbSO4
Oⓘ AnhydriteCaSO4
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ Aphthitalite(K,Na)3Na(SO4)2
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
Oⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Oⓘ Blossiteα-Cu2(V2O7)
Oⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ ChalcanthiteCuSO4 · 5H2O
Oⓘ ChalcocyaniteCuSO4
Oⓘ ChloraluminiteAlCl3 · 6H2O
Oⓘ CristobaliteSiO2
Oⓘ EuchlorineKNaCu3(SO4)3O
Oⓘ FingeriteCu11(VO4)6O2
Oⓘ HalotrichiteFeAl2(SO4)4 · 22H2O
Oⓘ HematiteFe2O3
Oⓘ HexahydriteMgSO4 · 6H2O
Oⓘ HowardevansiteNaCuFe2(VO4)3
Oⓘ Hypersthene(Mg,Fe)SiO3
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ LangbeiniteK2Mg2(SO4)3
Oⓘ LyonsiteCu3Fe4(VO4)6
Oⓘ McbirneyiteCu3(VO4)2
Oⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
Oⓘ ShcherbinaiteV25+O5
Oⓘ StoiberiteCu5(VO4)2O2
Oⓘ ThénarditeNa2SO4
Oⓘ Ziesiteβ-Cu2(V2O7)
Oⓘ UM1980-18-VO:CuCu4V2O9
FFluorine
Fⓘ FluoriteCaF2
Fⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Naⓘ Aphthitalite(K,Na)3Na(SO4)2
Naⓘ Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
Naⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Naⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ EuchlorineKNaCu3(SO4)3O
Naⓘ HaliteNaCl
Naⓘ HowardevansiteNaCuFe2(VO4)3
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
Naⓘ ThénarditeNa2SO4
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Mgⓘ HexahydriteMgSO4 · 6H2O
Mgⓘ Hypersthene(Mg,Fe)SiO3
Mgⓘ LangbeiniteK2Mg2(SO4)3
Mgⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ ChloraluminiteAlCl3 · 6H2O
Alⓘ HalotrichiteFeAl2(SO4)4 · 22H2O
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ CristobaliteSiO2
Siⓘ Hypersthene(Mg,Fe)SiO3
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
SSulfur
Sⓘ AnglesitePbSO4
Sⓘ AnhydriteCaSO4
Sⓘ Aphthitalite(K,Na)3Na(SO4)2
Sⓘ BlöditeNa2Mg(SO4)2 · 4H2O
Sⓘ ChalcanthiteCuSO4 · 5H2O
Sⓘ ChalcocyaniteCuSO4
Sⓘ EuchlorineKNaCu3(SO4)3O
Sⓘ HalotrichiteFeAl2(SO4)4 · 22H2O
Sⓘ HexahydriteMgSO4 · 6H2O
Sⓘ LangbeiniteK2Mg2(SO4)3
Sⓘ PatróniteVS4
Sⓘ ThénarditeNa2SO4
ClChlorine
Clⓘ ChloraluminiteAlCl3 · 6H2O
Clⓘ HaliteNaCl
Clⓘ SylviteKCl
KPotassium
Kⓘ Aphthitalite(K,Na)3Na(SO4)2
Kⓘ Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
Kⓘ EuchlorineKNaCu3(SO4)3O
Kⓘ LangbeiniteK2Mg2(SO4)3
Kⓘ SylviteKCl
CaCalcium
Caⓘ Albite var. Andesine(Na,Ca)[Al(Si,Al)Si2O8]
Caⓘ AnhydriteCaSO4
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ FluoriteCaF2
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
VVanadium
Vⓘ Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
Vⓘ Blossiteα-Cu2(V2O7)
Vⓘ FingeriteCu11(VO4)6O2
Vⓘ HowardevansiteNaCuFe2(VO4)3
Vⓘ LyonsiteCu3Fe4(VO4)6
Vⓘ McbirneyiteCu3(VO4)2
Vⓘ PatróniteVS4
Vⓘ ShcherbinaiteV25+O5
Vⓘ StoiberiteCu5(VO4)2O2
Vⓘ Ziesiteβ-Cu2(V2O7)
Vⓘ UM1980-18-VO:CuCu4V2O9
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ HalotrichiteFeAl2(SO4)4 · 22H2O
Feⓘ HematiteFe2O3
Feⓘ HowardevansiteNaCuFe2(VO4)3
Feⓘ Hypersthene(Mg,Fe)SiO3
Feⓘ LyonsiteCu3Fe4(VO4)6
CuCopper
Cuⓘ Blossiteα-Cu2(V2O7)
Cuⓘ ChalcanthiteCuSO4 · 5H2O
Cuⓘ ChalcocyaniteCuSO4
Cuⓘ EuchlorineKNaCu3(SO4)3O
Cuⓘ FingeriteCu11(VO4)6O2
Cuⓘ HowardevansiteNaCuFe2(VO4)3
Cuⓘ LyonsiteCu3Fe4(VO4)6
Cuⓘ McbirneyiteCu3(VO4)2
Cuⓘ StoiberiteCu5(VO4)2O2
Cuⓘ Ziesiteβ-Cu2(V2O7)
Cuⓘ UM1980-18-VO:CuCu4V2O9
PbLead
Pbⓘ AnglesitePbSO4

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Izalco_(volcano)
Wikidata ID:Q1049619

Other Regions, Features and Areas containing this locality

Caribbean PlateTectonic Plate
Central AmericaRegion

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Stoiber, R.E., Rose Jr., W.I. (1974) Fumarole incrustations at active Central American volcanoes. Geochimica et Cosmochimica Acta, 38, 495-516.
Birnie, Richard W., Hughes, John M. (1979) Stoiberite, Cu5V2O10, a new copper vanadate from Izalco volcano, El Salvador, Central America. American Mineralogist, 64 (9-10) 941-944
Hughes, John M., Birnie, Richard W. (1980) Ziesite, β-Cu2V2O7, a new copper vanadate and fumarole temperature indicator. American Mineralogist, 65 (11-12) 1146-1149
Hughes, John M., Finger, Larry W. (1983) Bannermanite, a new sodium-potassium vanadate isostructural with β-NaxV6O15. American Mineralogist, 68 (5-6) 634-641
Hughes, John M., Finger, Larry W. (1983) The crystal chemistry of shcherbinaite, naturally occurring V2O5. American Mineralogist, 68 (11-12) 1220-1222
Hughes, John M., Hadidiacos, C. G. (1985) Fingerite. Cu11O2(VO4)6, a new vanadium sublimate from Izalco volcano, El Salvador: descriptive mineralogy. American Mineralogist, 70 (1-2) 193-196
Robinson, Paul D., Hughes, John M., Malinconico, MaryAnn L. (1987) Blossite, α-Cu2+2V5+2O7, a new fumarolic sublimate from Izalco volcano, El Salvador. American Mineralogist, 72 (3-4) 397-400
Hughes, John M., Starkey, Sarah J., Malinconico, MaryAnn L., Malinconico, Lawrence L. (1987) Lyonsite, Cu2+3Fe3+4(VO4)3-6, a new fumarolic sublimate from Izalco volcano, El Salvador: Descriptive mineralogy and crystal structure. American Mineralogist, 72 (9-10) 1000-1005
Hughes, John M., Christian, Barbara S., Finger, Larry W., Malinconico, Lawrence L. (1987) Mcbirneyite, Cu3(VO4)2, a new sublimate mineral from the fumaroles of Izalco volcano, El Salvador. Journal of Volcanology and Geothermal Research, 33 (1) 183-190 doi:10.1016/0377-0273(87)90060-6
Hughes, John M., Drexler, John W., Campana, Charles F., Malinconico, Maryann L. (1988) Howardevansite, NaCu2+Fe3+2(VO4)3-3, a new fumarolic sublimate from Izalco volcano, El Salvador: Descriptive mineralogy and crystal structure. American Mineralogist, 73 (1-2) 181-186
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