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Giunchi stream prospect (Montenero), Terzorio, Imperia Province, Liguria, Italyi
| Regional Level Types | |
|---|---|
| Giunchi stream prospect (Montenero) | Prospect |
| Terzorio | Commune |
| Imperia Province | Province |
| Liguria | Administrative Region |
| Italy | Country |
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Latitude & Longitude (WGS84):
43° 51' 50'' North , 7° 54' 22'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Terzorio | 198 (2014) | 1.5km |
| Pompeiana | 775 (2014) | 1.9km |
| Lingueglietta | 140 (2014) | 2.0km |
| Cipressa | 369 (2014) | 2.4km |
| Pietrabruna | 365 (2014) | 2.8km |
Name(s) in local language(s):
Ricerca di Rio Giunchi (Montenero), Terzorio, Provincia di Imperia, Liguria, Italia
A small occurrence of argentiferous galena is located in the Rio Giunchi valley. The site was abandoned around 1857 due to the limited amount of exploitable material.
The mineralization occurs within the rocks of the Sanremo Flysch (San Michele Member), along a fault system that facilitated the circulation of hydrothermal fluids.
The first mineral to crystallize was galena, found as centimetric crystals mostly included within quartz, together with baryte, which occurs as large milky-white tabular crystals, also mostly included. Quartz subsequently crystallized, coating numerous rock cavities and forming characteristic aggregates of short, stubby crystals, mostly milky but sometimes bluish due to the underlying argillitic matrix. Finally, calcite crystallized, occasionally covering the quartz crystals. Beautiful smithsonite crystals can be found in areas where galena has undergone dissolution, greenockite is rare and it is present as earthy yellow coatings also in ex-galena sites and along fractures of undissolved galena crystals.
Both mines were developed along fault zones; however, the western mine is no longer accessible due to a collapse that blocks its entrance. Mineral collectors are advised to exercise caution, as the only remaining accessible mine is structurally unstable. Mineralized boulders and waste material from the two mines can still be found along the stream bed.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Cerussite Formula: PbCO3 |
| ⓘ Galena Formula: PbS References: |
| ⓘ Greenockite Formula: CdS |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 References: Matteo Azili CollectionIdentified by Matteo Azili: Visual Identification |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Rutile ? Formula: TiO2 |
| ⓘ Smithsonite Formula: ZnCO3 |
| ⓘ Sphalerite Formula: ZnS References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Greenockite | 2.CB.45 | CdS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Rutile ? | 4.DB.05 | TiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Smithsonite | 5.AB.05 | ZnCO3 |
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Cerussite | PbCO3 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | ⓘ Smithsonite | ZnCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Cerussite | PbCO3 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Smithsonite | ZnCO3 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Galena | PbS |
| S | ⓘ Greenockite | CdS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ti | Titanium | |
| Ti | ⓘ Rutile | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Zn | Zinc | |
| Zn | ⓘ Smithsonite | ZnCO3 |
| Zn | ⓘ Sphalerite | ZnS |
| Cd | Cadmium | |
| Cd | ⓘ Greenockite | CdS |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Pb | Lead | |
| Pb | ⓘ Cerussite | PbCO3 |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
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Giunchi stream prospect, Terzorio, Imperia Province, Liguria, Italy