Vote for your favorite mineral in #MinCup26! - Pyromorphite vs. Graphite
Linked by archaic translations and mineralogical misunderstandings, the quarterfinals are ending in hexagons with vivid pyromorphite vs writeable graphite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Sunset Crater (Sunset Peak), San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts), Coconino County, Arizona, USAi
Regional Level Types
Sunset Crater (Sunset Peak)Crater
San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts)Volcanic Field
Coconino CountyCounty
ArizonaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
02570110017272081565339.jpg
Cinder Cone at Sunset Crater

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
05661090017272081568667.jpg
Sunset Crater and San Francisco Peaks

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
08692650017272081568021.jpg
Sunset Crater Cinder Cone

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
02570110017272081565339.jpg
Cinder Cone at Sunset Crater

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
05661090017272081568667.jpg
Sunset Crater and San Francisco Peaks

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
08692650017272081568021.jpg
Sunset Crater Cinder Cone

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
02570110017272081565339.jpg
Cinder Cone at Sunset Crater

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
08465810017272081575165.jpg
Sunset Crater and San Francisco Peaks

Sunset Crater, San Franciscan volcanic field, Coconino County, Arizona, USA
Latitude & Longitude (WGS84):
35° 21' 51'' North , 111° 30' 12'' West
Latitude & Longitude (decimal):
35.36417,-111.50333
GRN:
N24W65
Type:
Crater
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Flagstaff70,320 (2017)22.8km
Kachina Village2,622 (2011)34.3km
Mountainaire1,119 (2011)34.3km
Parks1,188 (2011)42.0km
Leupp951 (2011)45.7km
Mindat Locality ID:
55669
Long-form identifier:
mindat:1:2:55669:0
GUID (UUID V4):
0


A prominent volcanic cone located 10 miles east of the summit of San Francisco Mountain. Designated a National Monument.

There are six fumarole areas (1-6) near the peak of the crater. Three different assemblages of minerals from fumaroles: Yellow-white zone (see alunite associated minerals); dull red zone (see alum-Na associated minerals); and, dark gray-pale brown zone (see magnetite associated minerals).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

22 valid minerals.

Rock Types Recorded

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

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Alum-(K)
Formula: KAl(SO4)2 · 12H2O
ⓘ Alum-(Na)
Formula: NaAl(SO4)2 · 12H2O
ⓘ Alunite
Formula: KAl3(SO4)2(OH)6
ⓘ Alunogen
Formula: Al2(SO4)3 · 17H2O
ⓘ Baryte
Formula: BaSO4
ⓘ Calcite
Formula: CaCO3
ⓘ Celestine
Formula: SrSO4
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Ferrohexahydrite
Formula: FeSO4 · 6H2O
Colour: White
Description: Pulverulent, coating some of the cinders as a fumarolic deposit.
ⓘ Fluorite
Formula: CaF2
ⓘ Forsterite
Formula: Mg2(SiO4)
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Hematite
Formula: Fe2O3
ⓘ Hematite var. Martite
Formula: Fe2O3
ⓘ Hydrokenoralstonite
Formula: Na0.5(Al,Mg)2(F,OH)6 · H2O
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Native Sulphur
Formula: S8
Description: A few crystals in lava around the rim of the crater.
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Pickeringite
Formula: MgAl2(SO4)4 · 22H2O
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Pyrope
Formula: Mg3Al2(SiO4)3
ⓘ Thénardite
Formula: Na2SO4
Description: Occurs as coatings on basaltic lavas.
ⓘ Voltaite
Formula: K2Fe2+5Fe3+3Al(SO4)12 · 18H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Sulphur1.CC.05S8
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
ⓘHydrokenoralstonite3.CF.05 Na0.5(Al,Mg)2(F,OH)6 · H2O
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘvar. Martite4.CB.05Fe2O3
ⓘOpal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘThénardite7.AD.25Na2SO4
ⓘBaryte7.AD.35BaSO4
ⓘCelestine7.AD.35SrSO4
ⓘAlunite7.BC.10KAl3(SO4)2(OH)6
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
ⓘFerrohexahydrite7.CB.25FeSO4 · 6H2O
ⓘAlunogen7.CB.45Al2(SO4)3 · 17H2O
ⓘPickeringite7.CB.85MgAl2(SO4)4 · 22H2O
ⓘAlum-(K)7.CC.20KAl(SO4)2 · 12H2O
ⓘAlum-(Na)7.CC.20NaAl(SO4)2 · 12H2O
ⓘVoltaite7.CC.25K2Fe2+5Fe3+3Al(SO4)12 · 18H2O
ⓘGypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘForsterite9.AC.05Mg2(SiO4)
ⓘPyrope9.AD.25Mg3Al2(SiO4)3
ⓘDiopside9.DA.15CaMgSi2O6
Unclassified
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

HHydrogen
Hⓘ AluniteKAl3(SO4)2(OH)6
Hⓘ AlunogenAl2(SO4)3 · 17H2O
Hⓘ FerrohexahydriteFeSO4 · 6H2O
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ JarositeKFe33+(SO4)2(OH)6
Hⓘ OpalSiO2 · nH2O
Hⓘ PickeringiteMgAl2(SO4)4 · 22H2O
Hⓘ Alum-(K)KAl(SO4)2 · 12H2O
Hⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
Hⓘ Alum-(Na)NaAl(SO4)2 · 12H2O
Hⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ AluniteKAl3(SO4)2(OH)6
Oⓘ AlunogenAl2(SO4)3 · 17H2O
Oⓘ BaryteBaSO4
Oⓘ CalciteCaCO3
Oⓘ CelestineSrSO4
Oⓘ DiopsideCaMgSi2O6
Oⓘ FerrohexahydriteFeSO4 · 6H2O
Oⓘ ForsteriteMg2(SiO4)
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HematiteFe2O3
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Hematite var. MartiteFe2O3
Oⓘ OpalSiO2 · nH2O
Oⓘ PickeringiteMgAl2(SO4)4 · 22H2O
Oⓘ Alum-(K)KAl(SO4)2 · 12H2O
Oⓘ PyropeMg3Al2(SiO4)3
Oⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
Oⓘ Alum-(Na)NaAl(SO4)2 · 12H2O
Oⓘ ThénarditeNa2SO4
Oⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FFluorine
Fⓘ FluoriteCaF2
Fⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
NaSodium
Naⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
Naⓘ Alum-(Na)NaAl(SO4)2 · 12H2O
Naⓘ ThénarditeNa2SO4
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ ForsteriteMg2(SiO4)
Mgⓘ PickeringiteMgAl2(SO4)4 · 22H2O
Mgⓘ PyropeMg3Al2(SiO4)3
Mgⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
AlAluminium
Alⓘ AluniteKAl3(SO4)2(OH)6
Alⓘ AlunogenAl2(SO4)3 · 17H2O
Alⓘ PickeringiteMgAl2(SO4)4 · 22H2O
Alⓘ Alum-(K)KAl(SO4)2 · 12H2O
Alⓘ PyropeMg3Al2(SiO4)3
Alⓘ Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6 · H2O
Alⓘ Alum-(Na)NaAl(SO4)2 · 12H2O
Alⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ DiopsideCaMgSi2O6
Siⓘ ForsteriteMg2(SiO4)
Siⓘ OpalSiO2 · nH2O
Siⓘ PyropeMg3Al2(SiO4)3
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SSulfur
Sⓘ AluniteKAl3(SO4)2(OH)6
Sⓘ AlunogenAl2(SO4)3 · 17H2O
Sⓘ BaryteBaSO4
Sⓘ CelestineSrSO4
Sⓘ FerrohexahydriteFeSO4 · 6H2O
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ JarositeKFe33+(SO4)2(OH)6
Sⓘ PickeringiteMgAl2(SO4)4 · 22H2O
Sⓘ Alum-(K)KAl(SO4)2 · 12H2O
Sⓘ Alum-(Na)NaAl(SO4)2 · 12H2O
Sⓘ Native SulphurS8
Sⓘ ThénarditeNa2SO4
Sⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
KPotassium
Kⓘ AluniteKAl3(SO4)2(OH)6
Kⓘ JarositeKFe33+(SO4)2(OH)6
Kⓘ Alum-(K)KAl(SO4)2 · 12H2O
Kⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ FluoriteCaF2
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FeIron
Feⓘ FerrohexahydriteFeSO4 · 6H2O
Feⓘ HematiteFe2O3
Feⓘ JarositeKFe33+(SO4)2(OH)6
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Hematite var. MartiteFe2O3
Feⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
SrStrontium
Srⓘ CelestineSrSO4
BaBarium
Baⓘ BaryteBaSO4

Localities in this Region

USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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

Guild, F. N. (1910) The Mineralogy of Arizona. The Chemical Publishing Co., Easton, PA.
Robinson, H.H. (1913) The San Franciscan Volcanic Field, Arizona. USGS PP 76: 89.
Galbraith, F. W. (1947) Minerals of Arizona (Second Edition, Revised) University of Arizona Bulletin 153. Arizona Bureau of Mines
Galbraith, F.W. and Brennan, D.J. (1959) Minerals of Arizona: 57.
Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.
Grant, Raymond W., Bideaux, R.A., Williams, S.A. (2005) Minerals Added to the Arizona List 1995-2005 (1st ed.)
Hanson, S.L., Fastner, A.U., and Simmons, W.B. (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Minerals, 83(6), 534-544.
Quick NavTopCommoditiesMineral ListRock TypesLocalities in RegionOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 28, 2026 20:27:50 Page updated: March 6, 2026 01:55:55
Go to top of page