Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Tolfa Mts District, Metropolitan City Of Rome Capital, Lazio, Italy

Oldest recorded age at locality: 7.4
Youngest recorded age at locality: 3

mindat Locality ID: 193202
mindat URL: http://www.mindat.org/loc-193202.html

Tectonic Settings:

Total number of sublocalities beneath "Tolfa Mts District, Metropolitan City Of Rome Capital, Lazio, Italy": 10
Total number of bottom-level sublocalities: 8

Number of Child Localities: 2
Child Localities:
Allumiere
Tolfa

Latitude: 42°10'7"N
Longitude: 11°50'33"E
Decimal Degree (lat, lon): 42.168611111111,11.8425

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amorphous	Aragonite	Baryte	Beryl	Calcite	Chalcopyrite	Chalcostibite	Clay	Clinozoisite	Corundum
Devilline	Diaspore	Epidote	Feldspar	Fluorite	Garnet	Gypsum	Humite	Kaolinite	Malachite
Marcasite	Melanterite	Mordenite	Nickeline	None	Not in a structural group	Pyrite	Quartz	Rocksalt	Rutile
Sphalerite	Spinel	Staurolite	Stibnite	Sulphur	Tetrahedrite	Titanite	Vesuvianite	Wavellite	Wollastonite
Zircon

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Ba C Ca Cu F Fe H Hg K Mg Mn Na O P Pb S Sb Si Ti Zn Zr

Elements from minerals reported directly at this locality: Al Ca H K Na O Si

Structural Groups for minerals in this locality:
Amorphous Aragonite Baryte Beryl Calcite Chalcopyrite Chalcostibite Clay Clinozoisite Corundum
Devilline Diaspore Epidote Feldspar Fluorite Garnet Gypsum Humite Kaolinite Malachite
Marcasite Melanterite Mordenite Nickeline None Not in a structural group Pyrite Quartz Rocksalt Rutile
Sphalerite Spinel Staurolite Stibnite Sulphur Tetrahedrite Titanite Vesuvianite Wavellite Wollastonite
Zircon

58 IMA Minerals at location:

Almandine ()*	Alunite ()*	Andradite ()*	Anglesite ()*	Azurite ()*
Baryte ()*	Calcite ()*	Cerussite ()*	Chalcocite ()*	Chalcopyrite ()*
Chalcostibite ()*	Chondrodite ()*	Cinnabar ()*	Cordierite ()*	Cuprite ()*
Dawsonite ()*	Dickite ()*	Dolomite ()*	Epidote ()*	Fluorite ()*
Galena ()*	Goethite ()*	Graphite ()*	Grossular ()*	Gypsum ()*
Halloysite-7Å ()*	Hematite ()*	Halloysite-10Å ()*	Ilmenite ()*	Kaolinite ()*
Magnetite ()*	Malachite ()*	Marcasite ()*	Melanterite ()*	Mercury ()*
Mordenite ()*	Opal ()*	Pyrite ()*	Pyrolusite ()*	Pyrrhotite ()*
Quartz ()*	Rosasite ()*	Rutile ()*	Sanidine ()*	Serpierite ()*
Siderite ()*	Smithsonite ()*	Sphalerite ()*	Spinel ()*	Staurolite ()*
Stibnite ()*	Sulphur ()*	Tetrahedrite-(Zn) ()*	Titanite ()*	Vesuvianite ()*
Wavellite ()*	Wollastonite ()*	Zircon ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃			1	69259	2353
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆			2	69253,69255	966
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	3.4	3	2	69258,69259	1534
Anglesite ()*	Baryte	Pb(SO₄)			2	69254,69256	2734
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	3.4	3	4	69253,69254,69256,69258	5509
Baryte ()*	Baryte	Ba(SO₄)			4	69253,69254,69255,69256	11547
Calcite ()*	Calcite	Ca(CO₃)			4	69253,69254,69256,69261	27770
Cerussite ()*	Aragonite	Pb(CO₃)	3.4	3	3	69254,69256,69258	4979
Chalcocite ()*	None	Cu₂S			1	69254	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			4	69253,69254,69256,69261	27198
Chalcostibite ()*	Chalcostibite	CuSbS₂			1	69254	162
Chondrodite ()*	Humite	Mg₅(SiO₄)₂F₂	7.4	5.4	1	69257	285
Cinnabar ()*	None	HgS			3	69253,69254,69255	2600
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	7.4	5.4	2	69257,69259	1008
Cuprite ()*	Not in a structural group	Cu₂O			1	69254	2970
Dawsonite ()*	None	NaAl(CO₃)(OH)₂			1	69260	90
Dickite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	7.4	3	0		651
Dolomite ()*	None	CaMg(CO₃)₂			2	69254,69261	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			1	69261	8173
Fluorite ()*	Fluorite	CaF₂	3.4	3	4	69253,69254,69256,69258	9617
Galena ()*	Rocksalt	PbS	3.4	3	3	69254,69256,69258	24243
Goethite ()*	Diaspore	FeO(OH)			3	69253,69254,69261	7437
Graphite ()*	None	C			1	69259	2812
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃			1	69261	1544
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			3	69253,69254,69256	6890
Halloysite-7Å ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	7.4	3	0		52
Hematite ()*	Corundum	Fe₂O₃	3.4	3	4	69253,69254,69258,69261	14640
Halloysite-10Å ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄·2H₂O	7.4	3	0		62
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	69259	5433
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			1	69253	5591
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	3.4	3	4	69253,69254,69258,69261	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	3.4	3	3	69254,69256,69258	12537
Marcasite ()*	Marcasite	FeS₂	3.4	3	4	69253,69254,69255,69258	5674
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O			1	69253	915
Mercury ()*	None	Hg			2	69253,69255	397
Mordenite ()*	Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆·28H₂O	7.4	3	0		405
Opal ()*	Amorphous	SiO₂·nH₂O			2	69253,69254	2994
Pyrite ()*	Pyrite	FeS₂	3.4	3	6	69253,69254,69255,69256,69258,69261	39462
Pyrolusite ()*	Rutile	MnO₂			1	69253	3106
Pyrrhotite ()*	Nickeline	Fe₇S₈			1	69259	9056
Quartz ()*	Quartz	SiO₂	3.4	3	7	69253,69254,69255,69256,69258,69259,69261	61156
Rosasite ()*	Malachite	CuZn(CO₃)(OH)₂	3.4	3	3	69253,69258,69260	454
Rutile ()*	Rutile	TiO₂			1	69259	5614
Sanidine ()*	Feldspar	K(AlSi₃O₈)	7.4	5.4	2	69257,69259	598
Serpierite ()*	Devilline	Ca(Cu,Zn)₄(SO₄)₂(OH)₆·3H₂O			1	69253	292
Siderite ()*	Calcite	Fe(CO₃)			2	69253,69261	6417
Smithsonite ()*	Calcite	Zn(CO₃)			3	69253,69254,69256	2473
Sphalerite ()*	Sphalerite	ZnS			3	69253,69254,69256	21482
Spinel ()*	Spinel	MgAl₂O₄			2	69253,69259	1934
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)			1	69259	978
Stibnite ()*	Stibnite	Sb₂S₃	3.4	3	3	69253,69254,69258	3418
Sulphur ()*	Sulphur	S			2	69253,69254	2045
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			2	69253,69254	5317
Titanite ()*	Titanite	CaTi(SiO₄)O	7.4	5.4	2	69257,69259	4899
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀			1	69253	1395
Wavellite ()*	Wavellite	Al₃(PO₄)₂(OH)₃·5H₂O			1	69253	374
Wollastonite ()*	Wollastonite	CaSiO₃			1	69253	1247
Zircon ()*	Zircon	Zr(SiO₄)	7.4	5.4	2	69257,69259	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_0071	Abandoned pyrite and galena mine
Michelle_0072	Rhyolitic dome with lava, tuffs, ignimbrites, and xenoliths

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Michelle_0072	7.4	5.4	6.4±1.0	K-Ar	Age of inclusions		biotite	K22						189463	Monte Sassetto, Allumiere, Tolfa Mts District, Metropolitan City Of Rome Capital, Lazio, Italy	Monte Sassetto	Fornaseri (1985)		RDSIMF40_73	Age of biotite from Bi-Melalatite. Sample described as coming from an inclusion.
	Michelle_0071	3.4	3	3.2±0.2	K-Ar	Age of monzanitic porphyry		sanidine	K21			Sanidine			30014	Roccaccia, Allumiere, Tolfa Mts District, Metropolitan City Of Rome Capital, Lazio, Italy	La Roccaccia	Fornaseri (1985)		RDSIMF40_73	Age of sanidine from monzonitic porphyry. Sample described as hypoabyssalite.

Sample	Source Locality	Reference URL
R060014	Tolfa, Tolfa Mts District, Metropolitan City Of Rome Capital, Lazio, Italy	https://rruff.info/R060014

All locality data graciously provided by mindat.org

All age data...