Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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

Poggio Pinzo (Gradoli pozzolana quarry), Gradoli, Viterbo Province, Lazio, Italyi
Regional Level Types
Poggio Pinzo (Gradoli pozzolana quarry)Quarry
GradoliMunicipality
Viterbo ProvinceProvince
LazioAdministrative Region
ItalyCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
02732010017272317107345.jpg
Gradoli Quarry

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
05042760017272317102433.jpg
Haüyne, etc.

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
07590000017272317101703.jpg
Haüyne

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
02732010017272317107345.jpg
Gradoli Quarry

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
05042760017272317102433.jpg
Haüyne, etc.

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
07590000017272317101703.jpg
Haüyne

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
02732010017272317107345.jpg
Gradoli Quarry

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
05042760017272317102433.jpg
Haüyne, etc.

Poggio Pinzo, Gradoli, Viterbo Province, Lazio, Italy
Latitude & Longitude (WGS84):
42° 38' 16'' North , 11° 49' 58'' East
Latitude & Longitude (decimal):
42.63778,11.83278
GeoHash:
G#: sr86t3br5
GRN:
N29E07
Type:
Quarry
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Latera806 (2014)1.0km
Gradoli1,305 (2014)2.0km
Il Casone130 (2014)5.1km
Grotte di Castro2,560 (2014)5.2km
Onano864 (2014)6.1km
Mindat Locality ID:
239472
Long-form identifier:
mindat:1:2:239472:8
GUID (UUID V4):
0
Name(s) in local language(s):
Poggio Pinzo, Gradoli, Làtera volcano, Viterbo, Lazio, Italia


Known among the Italian collectors as the "Gradoli pozzolana quarry", it is opened in the so-called "Tufi di Poggio Pinzo", a stratigraphic sequence mainly consisting of strombolian fall deposits ranging in size from ash to black scoriaceous lapilli and whitish pumices, and of hydromagmatic fall and surge deposits constituted by vescicular tuffs, fine- and coarse-grained tuffs with sandwave structures. The chemical composition varies from tephrite at the base of the stratigraphic sequence to phonolitic trachyte at its top.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


24 valid minerals.

Detailed Mineral List:

ⓘ Afghanite
Formula: (Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Andradite var. Melanite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Baddeleyite
Formula: ZrO2
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ 'Cancrinite Group'
ⓘ 'Chabazite'
ⓘ Cuspidine
Formula: Ca8(Si2O7)2F4
ⓘ Grossular
Formula: Ca3Al2(SiO4)3
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Haüyne
Formula: Na3Ca(Si3Al3)O12(SO4)
ⓘ Hematite
Formula: Fe2O3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Latiumite
Formula: (Ca,K)4(Si,Al)5O11(SO4,CO3)
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Melilite Group'
Formula: Ca2M(XSiO7)
ⓘ 'Phillipsite Subgroup'
Formula: (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Quartz
Formula: SiO2
ⓘ Sanidine
Formula: K(AlSi3O8)
ⓘ Sodalite
Formula: Na4(Si3Al3)O12Cl
ⓘ Spinel
Formula: MgAl2O4
ⓘ 'Thomsonite Subgroup'
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Tuscanite
Formula: KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
ⓘ Vonsenite
Formula: Fe2+2Fe3+(BO3)O2
ⓘ Wollastonite
Formula: Ca3(Si3O9)
ⓘ Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘHematite4.CB.05Fe2O3
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
ⓘBaddeleyite4.DE.35ZrO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 6 - Borates
ⓘVonsenite6.AB.30Fe2+2Fe3+(BO3)O2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘGypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘGrossular9.AD.25Ca3Al2(SiO4)3
ⓘAndradite
var. Melanite		9.AD.25Ca3Fe3+2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘCuspidine9.BE.17Ca8(Si2O7)2F4
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘLatiumite9.EG.45(Ca,K)4(Si,Al)5O11(SO4,CO3)
ⓘTuscanite9.EG.45KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘAfghanite9.FB.05(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
ⓘHaüyne9.FB.10Na3Ca(Si3Al3)O12(SO4)
ⓘSodalite9.FB.10Na4(Si3Al3)O12Cl
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chabazite'-
ⓘ'Phillipsite Subgroup'-(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Thomsonite Subgroup'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Cancrinite Group'-
ⓘ'Melilite Group'-Ca2M(XSiO7)

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BBoron
Bⓘ VonseniteFe22+Fe3+(BO3)O2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Cⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
OOxygen
Oⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ BaddeleyiteZrO2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ CuspidineCa8(Si2O7)2F4
Oⓘ GrossularCa3Al2(SiO4)3
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Oⓘ HematiteFe2O3
Oⓘ IlmeniteFe2+TiO3
Oⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SanidineK(AlSi3O8)
Oⓘ SodaliteNa4(Si3Al3)O12Cl
Oⓘ SpinelMgAl2O4
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
Oⓘ VonseniteFe22+Fe3+(BO3)O2
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ ZirconZr(SiO4)
Oⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
Oⓘ Pyroxene GroupADSi2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Melilite GroupCa2M(XSiO7)
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ CuspidineCa8(Si2O7)2F4
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Naⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Naⓘ SodaliteNa4(Si3Al3)O12Cl
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ SpinelMgAl2O4
AlAluminium
Alⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ GrossularCa3Al2(SiO4)3
Alⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Alⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Alⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ SanidineK(AlSi3O8)
Alⓘ SodaliteNa4(Si3Al3)O12Cl
Alⓘ SpinelMgAl2O4
Alⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
SiSilicon
Siⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ CuspidineCa8(Si2O7)2F4
Siⓘ GrossularCa3Al2(SiO4)3
Siⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Siⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Siⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SanidineK(AlSi3O8)
Siⓘ SodaliteNa4(Si3Al3)O12Cl
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ ZirconZr(SiO4)
Siⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Melilite GroupCa2M(XSiO7)
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Sⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Sⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
ClChlorine
Clⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ SodaliteNa4(Si3Al3)O12Cl
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Kⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Kⓘ SanidineK(AlSi3O8)
Kⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
CaCalcium
Caⓘ Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ CalciteCaCO3
Caⓘ CuspidineCa8(Si2O7)2F4
Caⓘ GrossularCa3Al2(SiO4)3
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ HaüyneNa3Ca(Si3Al3)O12(SO4)
Caⓘ Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)
Caⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ TuscaniteKCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Melilite GroupCa2M(XSiO7)
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ HematiteFe2O3
Feⓘ IlmeniteFe2+TiO3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ VonseniteFe22+Fe3+(BO3)O2
Feⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
ZrZirconium
Zrⓘ BaddeleyiteZrO2
Zrⓘ ZirconZr(SiO4)
BaBarium
Baⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Italy

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

Signoretti, E., Bosco, P. (2001) Le cave di Gradoli e Onano. Il Cercapietre: 1/2-2001: 10-25.
Quick NavTopMineral ListOther 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 3, 2026 07:33:45 Page updated: August 13, 2025 01:11:00
Go to top of page