Silius vein system, South Sardinia Province, Sardinia, Italyi
| Regional Level Types | |
|---|---|
| Silius vein system | Vein |
| South Sardinia Province | Province |
| Sardinia | Autonomous Region |
| Italy | - not defined - |
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Type:
Mindat Locality ID:
417227
Long-form identifier:
mindat:1:2:417227:0
GUID (UUID V4):
73b86916-6a57-40dd-a457-1d50595f4451
Fluorite-baryte vein system (with Pb-Zn sulphides) which comprises the following occurrences (shafts): Genna Tres Montis, Pozzo Centrale, and Muscadroxiu (Silius municipal territory), and Acqua Frida (San Basilio municipal territory).
The Silius vein system crops out discontinuously for 2-3 km along a NE-SW strike, between the Acqua Frida area (39Β°30β46ββN; 9Β°15β05ββE), the Muscadroxiu shaft (39Β°31β00ββN-9Β°15β18ββE) and the Genna Tres Montis shaft (39Β°31β3ββN-9Β°16β00ββE), at an elevation ranging between 600 and 700 m a.s.l. At the 400 m level, the veins reach a maximum length of 4 km. The Silius veins have been mined from the surface (around 600 m a.s.l.) down to 200 m a.s.l., and explored to 100 m a.s.l. The system consists of two main veins, called "San Giorgio" and "San Giuseppe", which have an almost vertical dip (about 75Β°), and a strike of N-045-E along the main sector Acqua Frida - Genna Tres Montis, and N-065-E northeastward from Genna Tres Montis. These two veins are almost parallel in the topmost levels, with a spacing of 70 m on average, but coalesce at a depth of 350 m a.s.l. in the NE sector, and at a depth of 450 m a.s.l. in the SW sector of the mineralized area. The San Giorgio vein was the first to be formed, and was displaced and brecciated by the San Giuseppe vein. The San Giorgio vein contains bands of chalcedony, pink fluorite, baryte, and calcite. The San Giuseppe vein is also banded and shows several generations of fluorite, carbonate minerals (mainly sparry calcite), galena, and quartz. The width of the veins ranges between 7-8 m in outcrop and 15-20 m in depth, where they are interconnected. The upper part of the vein system contains fluorite, baryte, and galena with grades of 35%, 10% and 3%, respectively, whereas in the lower zones the amount of baryte decreases dramatically and the fluorite and galena grades can reach 50% and 6%, respectively (Natale, 1969; Mondillo et al., 2016; Mondillo et al., 2017).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities11 valid minerals.
Detailed Mineral List:
| β Baryte Formula: BaSO4 Localities: |
| β Calcite Formula: CaCO3 Localities: |
| β Dolomite Formula: CaMg(CO3)2 References: |
| β Dolomite var. Iron-bearing Dolomite Formula: Ca(Mg,Fe)(CO3)2 References: |
| β Fluorite Formula: CaF2 Localities: |
| β Galena Formula: PbS Localities: |
| β Marcasite Formula: FeS2 |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 Localities: |
| β Quartz var. Chalcedony Formula: SiO2 References: |
| β Sphalerite Formula: ZnS |
| β Synchysite-(Ce) Formula: CaCe(CO3)2F References: |
| β Xenotime-(Y) Formula: Y(PO4) References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Sphalerite | 2.CB.05a | ZnS |
| β | Galena | 2.CD.10 | PbS |
| β | Pyrite | 2.EB.05a | FeS2 |
| β | Marcasite | 2.EB.10a | FeS2 |
| Group 3 - Halides | |||
| β | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| β | 4.DA.05 | SiO2 | |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| β | var. Iron-bearing Dolomite | 5.AB.10 | Ca(Mg,Fe)(CO3)2 |
| β | Synchysite-(Ce) | 5.BD.20c | CaCe(CO3)2F |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| β | Baryte | 7.AD.35 | BaSO4 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Xenotime-(Y) | 8.AD.35 | Y(PO4) |
List of minerals for each chemical element
Fossils
This region is too big or complex to display the fossil list, try looking at smaller subregions.Localities in this Region
- Sardinia
- South Sardinia Province
Other Regions, Features and Areas that Intersect
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References
Muscadroxius-Genna Tres Montis Mine, Silius, South Sardinia Province, Sardinia, Italy