Sillaro Valley, Metropolitan City of Bologna, Emilia-Romagna, Italyi
| Regional Level Types | |
|---|---|
| Sillaro Valley | Valley |
| Metropolitan City of Bologna | Metropolitan City |
| Emilia-Romagna | Region |
| Italy | Country |
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Type:
Largest Settlements:
| Place | Population |
|---|---|
| San Martino in Pedriolo | 459 (2014) |
| Sassoleone | 239 (2014) |
| Pellizzara | 207 (2014) |
Name(s) in local language(s):
Valle del Sillaro, Provincia di Bologna, Emilia-Romagna, Italia
Sillaro stream enters in Emilia-Romagna near the village of Giugnola and flows along a valley strongly characterised by badlands, whose sparse vegetation cover and steep slopes lead to high erosion rates. The valley is located in the municipal territory of Castel del Rio, Monterenzio, Casalfiumanese, and Castel San Pietro.
The main rocks of the valley belongs to the Argille Varicolori Formation mélange, which frequently embedd bodies of ophiolitic rocks and their hydrothermal alteration products (hydrothermalites). Most of the minerals described for this valley have been found in ophiolitic rocks and hydrothermalites outcropping at various localities and in erratics along the Sillaro stream bed. Furthermore, pyrite, marcasite, and gypsum are found embedded in shale matrix.
Septarian concretions are found in the badlands ("calanchi") and as erratics along the Sillaro stream bed. The most common mineral in these concretions is calcite, which appears as rhombohedral and scalenohedral crystals, combinations of these forms, globular and fascicular aggregates. Aragonite, baryte, celestine, dolomite, gypsum, and quartz occur less frequently. Peculiar rarities of the Sillaro valley septaria are strontianite (as globular aggregates of white acicular crystals) and palygorskite (as yellowish scaly aggregates).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities34 valid minerals.
Detailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Sulphur | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Millerite | 2.CC.20 | NiS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Vaesite | 2.EB.05a | NiS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz var. Amethyst | 4.DA.05 | SiO2 |
| ⓘ | var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | var. Blue Quartz | 4.DA.05 | SiO2 |
| ⓘ | Anatase | 4.DD.05 | TiO2 |
| ⓘ | Brookite | 4.DD.10 | TiO2 |
| ⓘ | Jamborite | 4.FL.05 | Ni2+1-xCo3+x(OH)2-x(SO4)x · nH2O |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| ⓘ | Aragonite | 5.AB.15 | CaCO3 |
| ⓘ | Strontianite | 5.AB.15 | SrCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| ⓘ | Reevesite ? | 5.DA.50 | Ni6Fe3+2(OH)16(CO3) · 4H2O |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Celestine | 7.AD.35 | SrSO4 |
| ⓘ | Brochantite | 7.BB.25 | Cu4(SO4)(OH)6 |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| Group 9 - Silicates | |||
| ⓘ | Chrysotile | 9.00. | Mg3(Si2O5)(OH)4 |
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Gedrite | 9.DD.05 | ◻{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2 |
| ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| ⓘ | Palygorskite | 9.EE.20 | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Unclassified | |||
| ⓘ | 'Amber' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| H | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Gedrite | ◻{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2 |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Jamborite | Ni2+1-xCox3+(OH)2-x(SO4)x · nH2O |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| H | ⓘ Reevesite | Ni6Fe23+(OH)16(CO3) · 4H2O |
| H | ⓘ Talc | Mg3Si4O10(OH)2 |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Aragonite | CaCO3 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | ⓘ Reevesite | Ni6Fe23+(OH)16(CO3) · 4H2O |
| C | ⓘ Siderite | FeCO3 |
| C | ⓘ Strontianite | SrCO3 |
| O | Oxygen | |
| O | ⓘ Quartz var. Amethyst | SiO2 |
| O | ⓘ Anatase | TiO2 |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Aragonite | CaCO3 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| O | ⓘ Brookite | TiO2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Celestine | SrSO4 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Gedrite | ◻{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Jamborite | Ni2+1-xCox3+(OH)2-x(SO4)x · nH2O |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Reevesite | Ni6Fe23+(OH)16(CO3) · 4H2O |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Strontianite | SrCO3 |
| O | ⓘ Talc | Mg3Si4O10(OH)2 |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Quartz var. Blue Quartz | SiO2 |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | ⓘ Gedrite | ◻{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2 |
| Mg | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Al | ⓘ Gedrite | ◻{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2 |
| Al | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Si | Silicon | |
| Si | ⓘ Quartz var. Amethyst | SiO2 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Gedrite | ◻{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2 |
| Si | ⓘ Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Quartz var. Blue Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| S | ⓘ Celestine | SrSO4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Jamborite | Ni2+1-xCox3+(OH)2-x(SO4)x · nH2O |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Millerite | NiS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Native Sulphur | S8 |
| S | ⓘ Vaesite | NiS2 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Aragonite | CaCO3 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ti | Titanium | |
| Ti | ⓘ Anatase | TiO2 |
| Ti | ⓘ Brookite | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Reevesite | Ni6Fe23+(OH)16(CO3) · 4H2O |
| Fe | ⓘ Siderite | FeCO3 |
| Co | Cobalt | |
| Co | ⓘ Jamborite | Ni2+1-xCox3+(OH)2-x(SO4)x · nH2O |
| Ni | Nickel | |
| Ni | ⓘ Jamborite | Ni2+1-xCox3+(OH)2-x(SO4)x · nH2O |
| Ni | ⓘ Millerite | NiS |
| Ni | ⓘ Reevesite | Ni6Fe23+(OH)16(CO3) · 4H2O |
| Ni | ⓘ Vaesite | NiS2 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Sr | Strontium | |
| Sr | ⓘ Celestine | SrSO4 |
| Sr | ⓘ Strontianite | SrCO3 |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
Fossils
There are 1 fossil locality from the PaleoBioDB database within this region.These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.
| Occurrences | 2 |
|---|---|
| Youngest Fossil Listed | 3.60 Ma (Pliocene) |
| Oldest Fossil Listed | 5.33 Ma (Miocene) |
| Fossils from Region | Click here to show the list. |
| Fossil Localities | Click to show 1 fossil locality |
Localities in this Region
- Emilia-Romagna
- Metropolitan City of Bologna
- Casalfiumanese
- Monterenzio
- Metropolitan City of Bologna
- Emilia-Romagna
- Metropolitan City of Bologna
Other Regions, Features and Areas that Intersect
Eurasian PlateTectonic Plate
- Apennine OrogenAccretionary Complex
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References
Stancalasse stream, Monterenzio, Metropolitan City of Bologna, Emilia-Romagna, Italy