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Montorsi iron ore prospects (Monte Spinosa-North; Monte Spinosa iron deposit), Campiglia Marittima, Livorno Province, Tuscany, Italyi
| Regional Level Types | |
|---|---|
| Montorsi iron ore prospects (Monte Spinosa-North; Monte Spinosa iron deposit) | Group of Prospects |
| Campiglia Marittima | Commune |
| Livorno Province | Province |
| Tuscany | Region |
| Italy | Country |
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Latitude & Longitude (WGS84):
43° 4' 8'' North , 10° 35' 48'' East
Latitude & Longitude (decimal):
Type:
Group of Prospects
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Campiglia Marittima | 1,379 (2014) | 1.8km |
| Lumiere | 154 (2014) | 2.9km |
| San Carlo | 256 (2014) | 3.3km |
| Cafaggio | 407 (2014) | 4.4km |
| Venturina | 9,004 (2014) | 4.5km |
Name(s) in local language(s):
Ricerche per minerali di ferro di Montorsi (Monte Spinosa-Nord; Giacimento ferrifero di Monte Spinosa), Campiglia Marittima, Campigliese (Monti di Campiglia), Provincia di Livorno, Toscana, Italia
Numerous iron ore orebodies, hosted in metamorphic carbonate rocks and in the contact aureole of the Botro ai Marmi granite, are located along the northern flank of Monte Spinosa.
Prospecting and small-scale mining operations of these orebodies have been performed since antiquity but more extensively in the first half of the 20th century (Pullè, 1918). The brown iron ore (limonite) of these small orebodies has two different origins: oxidised bodies of pyrite-pyrrhotite-arsenopyrite, related to the contact aureole of the Botro ai Marmi granite, and oxidised bodies of hedenbergite-ilvaite skarns containing pyrite, chalcopyrite, sphalerite, and galena (southern fringes of the large skarn masses of the Temperino-Lanzi mining area).
The Montorsi iron ore prospects, situated north-east of the Monte Spinosa summit, consist of numerous trenches, tunnels, mined caves, and a 344-m-long incline (whose entrance is located at 230 m a.s.l. in the little valley sloping down towards the road San Vincenzo-Campiglia Marittima). In all these prospects, aurichalcite is an accessory of the oxidised skarn bodies (Nannoni et al., 2012; Dini & Pistolesi, 2013).
The mentioned 344-m-long incline (known among the local collectors as "galleria del Tognetti", i.e., "Tognetti's gallery") cuts (at 86 m) a karst cavity (rich in organ-pipe calcite concretions) and (at 200 m) a fault filled with iron hydroxides, in which spectacular druses of aurichalcite, as tufts of turquoise acicular crystals up to 1 cm in length, in association with colourless crystals of hemimorphite and calcite, were recovered in the 1970s. Other outstanding finds of aurichalcite are known from other excavations situated near the ridge between Monte Spinosa and Casa Montorsi (e.g., Buca Grande di Montorsi, the most well-known mined cave of this area; see http://www.mindat.org/loc-268539.html).
Furthermore, a blackish body of altered manganesiferous hedenbergite, locally containing quartz and sphalerite, crops out near the summit of Monte Spinosa.
Coordinates are for the Monte Spinosa.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities15 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Andradite Formula: Ca3Fe3+2(SiO4)3 |
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Aurichalcite Formula: (Zn,Cu)5(CO3)2(OH)6 Localities: |
| ⓘ Calcite Formula: CaCO3 Localities: |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS Localities: |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Hedenbergite Formula: CaFe2+Si2O6 Localities: |
| ⓘ Hemimorphite Formula: Zn4Si2O7(OH)2 · H2O |
| ⓘ Ilvaite Formula: CaFe3+Fe2+2(Si2O7)O(OH) |
| ⓘ 'Limonite' Localities: |
| ⓘ Pyrite Formula: FeS2 Localities: |
| ⓘ Pyrolusite Formula: Mn4+O2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 Localities: |
| ⓘ Sphalerite Formula: ZnS Localities: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Aurichalcite | 5.BA.15 | (Zn,Cu)5(CO3)2(OH)6 |
| Group 9 - Silicates | |||
| ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | Hemimorphite | 9.BD.10 | Zn4Si2O7(OH)2 · H2O |
| ⓘ | Ilvaite | 9.BE.07 | CaFe3+Fe2+2(Si2O7)O(OH) |
| ⓘ | Hedenbergite | 9.DA.15 | CaFe2+Si2O6 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Aurichalcite | (Zn,Cu)5(CO3)2(OH)6 |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| H | ⓘ Ilvaite | CaFe3+Fe22+(Si2O7)O(OH) |
| C | Carbon | |
| C | ⓘ Aurichalcite | (Zn,Cu)5(CO3)2(OH)6 |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| O | ⓘ Aurichalcite | (Zn,Cu)5(CO3)2(OH)6 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hedenbergite | CaFe2+Si2O6 |
| O | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| O | ⓘ Ilvaite | CaFe3+Fe22+(Si2O7)O(OH) |
| O | ⓘ Pyrolusite | Mn4+O2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Si | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| Si | ⓘ Ilvaite | CaFe3+Fe22+(Si2O7)O(OH) |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Ca | ⓘ Ilvaite | CaFe3+Fe22+(Si2O7)O(OH) |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Fe | Iron | |
| Fe | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hedenbergite | CaFe2+Si2O6 |
| Fe | ⓘ Ilvaite | CaFe3+Fe22+(Si2O7)O(OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Aurichalcite | (Zn,Cu)5(CO3)2(OH)6 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Aurichalcite | (Zn,Cu)5(CO3)2(OH)6 |
| Zn | ⓘ Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Localities in this Region
- Tuscany
- Livorno Province
- Campiglia Marittima
- Montorsi iron ore prospects (Monte Spinosa-North; Monte Spinosa iron deposit)
- Campiglia Marittima
- Livorno Province
Other Regions, Features and Areas containing this locality
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References
Montorsi iron ore prospects, Campiglia Marittima, Livorno Province, Tuscany, Italy