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Izalco Volcano, Sonsonate Department, El Salvadori
Regional Level Types
Izalco VolcanoVolcano
Sonsonate DepartmentDepartment
El SalvadorCountry

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Key
Latitude & Longitude (WGS84):
13° 48' 49'' North , 89° 37' 57'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Izalco19,197 (2012)8.8km
Nahuizalco7,358 (2012)11.9km
Sonzacate15,446 (2014)12.5km
Juayúa9,936 (2012)12.6km
Sonsonate59,468 (2012)14.4km


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.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


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

Rock Types Recorded

Note: this is a very new system on mindat.org and 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)
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Albite var: Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Anorthite
Formula: Ca(Al2Si2O8)
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Anorthite var: Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Anorthite var: Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Bannermanite (TL)
Formula: (Na,K)0.7V4+0.7V5+5.3O15
Type Locality:
Reference: Amer.Min.(1983) 68, 634-641
Blossite (TL)
Formula: α-Cu2(V2O7)
Type Locality:
Reference: American Mineralogist (1987) 72, 397-400; HB3 (1997)
Chalcanthite
Formula: CuSO4 · 5H2O
Reference: Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 36
Chalcocyanite
Formula: CuSO4
Reference: Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 36
Euchlorine
Formula: KNaCu3(SO4)3O
Reference: http://www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/fumar.html; Amer.Min.(1985) 70, 193-196; Hughes J M, Christian B S, Finger L W, Malinconico L 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, 183-190
'Fayalite-Forsterite Series'
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Fingerite (TL)
Formula: Cu11(VO4)6O2
Type Locality:
Reference: Amer.Min.(1985) 70, 193-196; HB4 (2000); Hughes J M, Christian B S, Finger L W, Malinconico L 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, 183-190
Howardevansite (TL)
Formula: NaCuFe2(VO4)3
Type Locality:
Reference: Amer.Min.(1988) 73, 181-186
'Hypersthene'
Formula: (Mg,Fe)SiO3
Reference: www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/petro.html a
Lyonsite (TL)
Formula: Cu3Fe4(VO4)6
Type Locality:
Description: Fumarolic sublimate.
Reference: Amer.Min.(1987) 72, 1000-1005
Mcbirneyite (TL)
Formula: Cu3(VO4)2
Type Locality:
Description: From the "Y" fumarole
Reference: Hughes J M, Christian B S, Finger L W, Malinconico L 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, 183-190
Shcherbinaite
Formula: V5+2O5
Reference: http://www.geo.mtu.edu/volcanoes/central_america/el_salvador/izalco/fumar.html; Amer.Min.(1983) 68, 634-641 ; Hughes, J. M., & Finger, L. W. (1983). The crystal chemistry of shcherbinaite, naturally occurring V 2 O 5. American Mineralogist, 68(11-12), 1220-1222.
Stoiberite (TL)
Formula: Cu5(VO4)2O2
Type Locality:
Reference: AM 64 (1979), 941; HB3 (1997); Amer.Min.(1983) 68, 634-641
'Thénardite'
Formula: Na2SO4
Reference: Am Min 70:1-2 pp 193-196; Amer.Min.(1985) 70, 193-196; Hughes J M, Christian B S, Finger L W, Malinconico L 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, 183-190
'UM1980-18-VO:Cu'
Formula: Cu4V2O9
Reference: Hughes, J.M., Birnie, R.W. (1980): Ziesite, β-Cu2V2O7, a new copper vanadate and fumarole temperature indicator. American Mineralogist: 65: 1146-1149
Ziesite (TL)
Formula: β-Cu2(V2O7)
Type Locality:
Reference: [Amer.Min.(1980) 65, 1146-1149; MinRec 18:339]; Amer.Min.(1983) 68, 634-641

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Bannermanite (TL)4.HF.05(Na,K)0.7V4+0.7V5+5.3O15
Shcherbinaite4.HE.10V5+2O5
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Chalcanthite7.CB.20CuSO4 · 5H2O
Chalcocyanite7.AB.10CuSO4
Euchlorine7.BC.30KNaCu3(SO4)3O
'Thénardite'7.AC.25Na2SO4
Group 8 - Phosphates, Arsenates and Vanadates
Blossite (TL)8.FA.05α-Cu2(V2O7)
Fingerite (TL)8.BB.80Cu11(VO4)6O2
Howardevansite (TL)8.AC.05NaCuFe2(VO4)3
Lyonsite (TL)8.AB.40Cu3Fe4(VO4)6
Mcbirneyite (TL)8.AB.35Cu3(VO4)2
Stoiberite (TL)8.BB.75Cu5(VO4)2O2
Ziesite (TL)8.FA.10β-Cu2(V2O7)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Anorthite9.FA.35Ca(Al2Si2O8)
var: Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
var: Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'Hypersthene'-(Mg,Fe)SiO3
'UM1980-18-VO:Cu'-Cu4V2O9

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
Miscellaneous
Shcherbinaite4.6.1.1V5+2O5
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
A2XO4
'Thénardite'28.2.3.1Na2SO4
AXO4
Chalcocyanite28.3.3.1CuSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Chalcanthite29.6.7.1CuSO4 · 5H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)3Zq
Euchlorine30.3.1.1KNaCu3(SO4)3O
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Mcbirneyite (TL)38.3.10.1Cu3(VO4)2
Miscellaneous
Blossite (TL)38.5.6.1α-Cu2(V2O7)
Howardevansite (TL)38.5.3.1NaCuFe2(VO4)3
Lyonsite (TL)38.5.2.1Cu3Fe4(VO4)6
Ziesite (TL)38.5.5.2β-Cu2(V2O7)
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq
Stoiberite (TL)41.4.5.1Cu5(VO4)2O2
Miscellaneous
Fingerite (TL)41.11.3.1Cu11(VO4)6O2
Group 47 - VANADIUM OXYSALTS
Hydrated Normal Vanadium Oxysalts
Bannermanite (TL)47.3.5.1(Na,K)0.7V4+0.7V5+5.3O15
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
var: Andesine-(Na,Ca)[Al(Si,Al)Si2O8]
Anorthite-Ca(Al2Si2O8)
var: Bytownite-(Ca,Na)[Al(Al,Si)Si2O8]
var: Labradorite-(Ca,Na)[Al(Al,Si)Si2O8]
'Fayalite-Forsterite Series'-
'Hypersthene'-(Mg,Fe)SiO3
'UM1980-18-VO:Cu'-Cu4V2O9

List of minerals for each chemical element

HHydrogen
H ChalcanthiteCuSO4 · 5H2O
OOxygen
O LyonsiteCu3Fe4(VO4)6
O Ziesiteβ-Cu2(V2O7)
O Blossiteα-Cu2(V2O7)
O FingeriteCu11(VO4)6O2
O McbirneyiteCu3(VO4)2
O StoiberiteCu5(VO4)2O2
O Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
O HowardevansiteNaCuFe2(VO4)3
O ShcherbinaiteV25+O5
O EuchlorineKNaCu3(SO4)3O
O ThénarditeNa2SO4
O Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
O Hypersthene(Mg,Fe)SiO3
O Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
O ChalcocyaniteCuSO4
O ChalcanthiteCuSO4 · 5H2O
O UM1980-18-VO:CuCu4V2O9
O AnorthiteCa(Al2Si2O8)
O AlbiteNa(AlSi3O8)
NaSodium
Na Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
Na HowardevansiteNaCuFe2(VO4)3
Na EuchlorineKNaCu3(SO4)3O
Na ThénarditeNa2SO4
Na Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Na Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Na Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Hypersthene(Mg,Fe)SiO3
AlAluminium
Al Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Al Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Al Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Al AnorthiteCa(Al2Si2O8)
Al AlbiteNa(AlSi3O8)
SiSilicon
Si Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Si Hypersthene(Mg,Fe)SiO3
Si Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Si AnorthiteCa(Al2Si2O8)
Si AlbiteNa(AlSi3O8)
SSulfur
S EuchlorineKNaCu3(SO4)3O
S ThénarditeNa2SO4
S ChalcocyaniteCuSO4
S ChalcanthiteCuSO4 · 5H2O
KPotassium
K Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
K EuchlorineKNaCu3(SO4)3O
CaCalcium
Ca Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Anorthite (var: Labradorite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Ca AnorthiteCa(Al2Si2O8)
VVanadium
V LyonsiteCu3Fe4(VO4)6
V Ziesiteβ-Cu2(V2O7)
V Blossiteα-Cu2(V2O7)
V FingeriteCu11(VO4)6O2
V McbirneyiteCu3(VO4)2
V StoiberiteCu5(VO4)2O2
V Bannermanite(Na,K)0.7V4+0.7V5+5.3O15
V HowardevansiteNaCuFe2(VO4)3
V ShcherbinaiteV25+O5
V UM1980-18-VO:CuCu4V2O9
FeIron
Fe LyonsiteCu3Fe4(VO4)6
Fe HowardevansiteNaCuFe2(VO4)3
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Hypersthene(Mg,Fe)SiO3
CuCopper
Cu LyonsiteCu3Fe4(VO4)6
Cu Ziesiteβ-Cu2(V2O7)
Cu Blossiteα-Cu2(V2O7)
Cu FingeriteCu11(VO4)6O2
Cu McbirneyiteCu3(VO4)2
Cu StoiberiteCu5(VO4)2O2
Cu HowardevansiteNaCuFe2(VO4)3
Cu EuchlorineKNaCu3(SO4)3O
Cu ChalcocyaniteCuSO4
Cu ChalcanthiteCuSO4 · 5H2O
Cu UM1980-18-VO:CuCu4V2O9

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Birnie, R.W., Hughes, J.M. (1979) Stoiberite, Cu5V2O10, a new copper vanadate from Izalco volcano, El Salvador, Central America. American Mineralogist, 64, 941-944. http://www.minsocam.org/ammin/AM64/AM64_941.pdf
Birnie, R.W., Hughes, J.M. (1980) Ziesite, β-Cu2(V2O7), a new copper vanadate and fumarole temperature indicator. American Mineralogist, 65, 1146-1149. http://www.minsocam.org/ammin/AM65/AM65_1146.pdf
Hughes, J.M., Finger, L.W. (1980) Bannermanite, a new sodium-potassium vanadate isostructural with β-NaxV6O15. American Mineralogist, 68, 634-642. http://www.minsocam.org/ammin/AM68/AM68_634.pdf
Hughes, J.M., Finger, L.W. (1983) The crystal chemistry of shcherbinaite, naturally occurring V2O5. American Mineralogist, 68(11-12), 1220-1222. http://www.minsocam.org/ammin/AM68/AM68_1220.pdf
Hughes, J.M., Hadidiacos, C.G. (1985) Fingerite, Cu11O2(VO4)6, a new vanadium sublimate from Izalco crater, El Salvador: descriptive mineralogy. American Mineralogist, 70, 193-196. http://www.minsocam.org/ammin/AM70/AM70_193.pdf
Robinson, P.D., Hughes, J.M., Malinconico, M.L. (1987) Blossite, α-Cu2[V2O7], a new fumarolic sublimate from Izalco volcano, El Salvador. American Mineralogist, 72, 397-400. http://www.minsocam.org/ammin/AM72/AM72_397.pdf
Hughes, J.M., Starkey, S.J., Malinconico, M.L., Malinconico, L.L. (1987) Lyonsite, Cu32+Fe43+(VO4)63-, a new fumarolic sublimate from Izalco volcano, El Salvador: Descriptive mineralogy and crystal structure. American Mineralogist, 72, 1000-1005. http://www.minsocam.org/ammin/AM72/AM72_1000.pdf
Hughes, J.M., Christian, B.S., Finger, L.W., Malinconico, L.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, 183–190.
Hughes, J.M., Drexler, J.W., Campana, C.F., Malinconico, M.L. (1988) Howardevansite, NaCuFe2(VO4)3, a new fumarolic sublimate from Izalco volcano, El Salvador: Descriptive mineralogy and crystal structure. American Mineralogist, 73, 181-186. http://www.minsocam.org/ammin/AM73/AM73_181.pdf

Other Databases

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

External Links


Other Regions, Features and Areas containing this locality


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.
 
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