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Spizzicatore Hill, Allumiere, Metropolitan City of Rome Capital, Lazio, Italyi
Regional Level Types
Spizzicatore HillHill
AllumiereMunicipality
Metropolitan City of Rome CapitalMetropolitan City
LazioAdministrative Region
Italy- not defined -

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Latitude & Longitude (WGS84):
42° 10' 7'' North , 11° 50' 33'' East
Latitude & Longitude (decimal):
42.16886,11.84251
GeoHash:
G#: sr2rvkx7q
GRN:
N29E07
Type:
Hill
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Allumiere3,603 (2014)5.2km
Aurelia1,248 (2014)5.6km
La Bianca390 (2014)5.7km
Tolfa4,421 (2014)7.7km
Civitavecchia47,543 (2014)9.2km
Mindat Locality ID:
189554
Long-form identifier:
mindat:1:2:189554:7
GUID (UUID V4):
be9880b2-439e-4d2c-b836-8cd27b469fff
Name(s) in local language(s):
Colle dello Spizzicatore, Allumiere, Distretto dei Monti della Tolfa, Roma, Italia


The Spizzicatore hill (Colle dello Spizzicatore) is partly occupied by a quarry, where the ignimbrite rocks are occasionally extracted for road construction and servicing. Several types of rocks occur in this pyroclastic deposit (known in literature as “tufi caotici"): there are fragments of ignimbrites which show a glassy groundmass with K feldspar (sanidine), labradoritic plagioclase, biotite, ortho- and clino-pyroxene as main phenocrystals. Other holocrystalline tephra have a syenitic appearance and are constituted by dominant K feldspar (sanidine) and plagioclase, with minor pyroxene and biotite; common accessories are rutile and zircon (Negretti, 1962).

Cordierite ha been found in blocks with a very fine-grained holocrystalline texture. Cordierite crystal cores often enclose euhedral spinel, ilmenite, and quartz, often coexisting with monazite and pyrrhotite droplets. The ignimbrite can include volcanic rocks in which one can find different minerals. The fine-grained matrix is composed of plagioclase, abundant graphite flakes, accessory minerals (ilmenite) and numerous vugs and vesicles coated with smectite group minerals.

[GPS coordinates to be confirmed.]

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

ⓘ Almandine
Formula: Fe2+3Al2(SiO4)3
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Andradite var. Melanite
Formula: Ca3(Fe3+,Ti)2(SiO4)3
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
ⓘ Graphite
Formula: C
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ 'Monazite'
Formula: REE(PO4)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Sanidine
Formula: K(AlSi3O8)
ⓘ 'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
ⓘ Spinel
Formula: MgAl2O4
ⓘ Staurolite
Formula: Fe2+2Al9Si4O23(OH)
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

Ca3(Fe3+,Ti)2(SiO4)3ⓘ Andradite var. Melanite
Fe2+TiO3ⓘ Ilmenite
CaTi(SiO4)Oⓘ Titanite
Zr(SiO4)ⓘ Zircon

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘPyrrhotite2.CC.10Fe1-xS
Group 4 - Oxides and Hydroxides
ⓘSpinel4.BB.05MgAl2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 9 - Silicates
ⓘAndradite
var. Melanite		9.AD.25Ca3(Fe3+,Ti)2(SiO4)3
ⓘAlmandine9.AD.25Fe2+3Al2(SiO4)3
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘStaurolite9.AF.30Fe2+2Al9Si4O23(OH)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘCordierite9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
ⓘSanidine9.FA.30K(AlSi3O8)
Unclassified
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Monazite'-REE(PO4)
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ StauroliteFe22+Al9Si4O23(OH)
Hⓘ Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ AlmandineFe32+Al2(SiO4)3
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Cordierite(Mg,Fe)2Al3(AlSi5O18)
Oⓘ IlmeniteFe2+TiO3
Oⓘ MonaziteREE(PO4)
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ SanidineK(AlSi3O8)
Oⓘ SpinelMgAl2O4
Oⓘ StauroliteFe22+Al9Si4O23(OH)
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ ZirconZr(SiO4)
Oⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
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
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mgⓘ SpinelMgAl2O4
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ AlmandineFe32+Al2(SiO4)3
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Cordierite(Mg,Fe)2Al3(AlSi5O18)
Alⓘ SanidineK(AlSi3O8)
Alⓘ SpinelMgAl2O4
Alⓘ StauroliteFe22+Al9Si4O23(OH)
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ AlmandineFe32+Al2(SiO4)3
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Cordierite(Mg,Fe)2Al3(AlSi5O18)
Siⓘ QuartzSiO2
Siⓘ SanidineK(AlSi3O8)
Siⓘ StauroliteFe22+Al9Si4O23(OH)
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ ZirconZr(SiO4)
Siⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
PPhosphorus
Pⓘ MonaziteREE(PO4)
SSulfur
Sⓘ PyrrhotiteFe1-xS
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ SanidineK(AlSi3O8)
CaCalcium
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
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ⓘ RutileTiO2
Tiⓘ TitaniteCaTi(SiO4)O
Tiⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
FeIron
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ AlmandineFe32+Al2(SiO4)3
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Cordierite(Mg,Fe)2Al3(AlSi5O18)
Feⓘ IlmeniteFe2+TiO3
Feⓘ PyrrhotiteFe1-xS
Feⓘ StauroliteFe22+Al9Si4O23(OH)
Feⓘ Andradite var. MelaniteCa3(Fe3+,Ti)2(SiO4)3
ZrZirconium
Zrⓘ ZirconZr(SiO4)

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

Negretti, G.C. (1962): Osservazioni vulcanologiche e petrografiche sui tufi caotici e le ignimbriti dei Monti del Sassetto (Tolfa). Rend. Soc. Mineral. Ital., 19, 171-187.
Della Ventura, G., Bellatreccia, F., Cámara, F., Oberti, R., Lorand, J.P., Parodi, G.C., Carlier, G., Di Domenico, D. (2006): Carbon-bearing cordierite from Allumiere (Tolfa volcanic center, Latium, Italy): occurrence, crystal-structure and FTIR microspectroscopy. Periodico di Mineralogia, 75, 113–126. [http://www.dst.uniroma1.it/riviste/permin/testi/V75/14.pdf]
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