Vallone del Cengiaccio (Cengiaccio; Cengiàsc; Cengiasco), Lanzada, Sondrio Province, Lombardy, Italyi
| Regional Level Types | |
|---|---|
| Vallone del Cengiaccio (Cengiaccio; Cengiàsc; Cengiasco) | - not defined - |
| Lanzada | Municipality |
| Sondrio Province | Province |
| Lombardy | Region |
| Italy | Country |
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Latitude & Longitude (WGS84):
46° North , 9° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~9km
Köppen climate type:
Name(s) in local language(s):
Vallone del Cengiaccio (Cengiaccio; Cengiàsc; Cengiasco), Lanzada, Val Lanterna, Valmalenco (Val Malenco), Valtellina, Sondrio, Lombardia, Italia
Vallone del Cengiaccio (Cengiàsc in the local dialect) is a steep couloir, filled with rock debris partly originated from the old asbestos mines that mainly operated on the southern slope of Palla del Cengiaccio. The most known of them is the Sferlùn asbestos mine (http://www.mindat.org/loc-27325.html), renowned for the oustanding finds of demantoid. Nevertheless, also the neighbour asbestos mines (Triangul, Uciai, Streúc, and Ciel), which operated under French technical management during the XIX century, have yielded quite good specimens of demantoid. On the opposite side of Vallone del Cengiaccio, at an altitude of about 1850 m, there is another mine (that firstly operated before 1890 and then sporadically during the 1930s), named “Cingirel del Togn”. Very lustrous bottle-green crystals of demantoid, as well as various minerals from carbonate veins (hydrothermalites) in serpentinite, are known from this mine.
Some interesting minerals from carbonate veins (hydrothermalites), such as apatite, cuprite, heazlewoodite, mcguinnessite, pecoraite, and reevesite, have been found only in the rock debris (Bedognè et al., 2006).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities23 valid minerals.
Detailed Mineral List:
| ⓘ Andradite Formula: Ca3Fe3+2(SiO4)3 |
| ⓘ Andradite var. Demantoid Formula: Ca3Fe3+2(SiO4)3 |
| ⓘ Antigorite Formula: Mg3(Si2O5)(OH)4 |
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
| ⓘ Aragonite Formula: CaCO3 |
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 |
| ⓘ Brucite Formula: Mg(OH)2 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ 'Chlorite Group' |
| ⓘ Chrysotile Formula: Mg3(Si2O5)(OH)4 |
| ⓘ 'Clinochrysotile' Formula: Mg3(Si2O5)(OH)4 References: |
| ⓘ Cuprite Formula: Cu2O |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ Forsterite Formula: Mg2(SiO4) |
| ⓘ Heazlewoodite Formula: Ni3S2 |
| ⓘ Hydromagnesite Formula: Mg5(CO3)4(OH)2 · 4H2O |
| ⓘ Hydroxylclinohumite Formula: Mg9(SiO4)4(OH)2 |
| ⓘ Lizardite Formula: Mg3(Si2O5)(OH)4 References: |
| ⓘ Magnesite Formula: MgCO3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Mcguinnessite Formula: (Mg,Cu)2(CO3)(OH)2 |
| ⓘ Native Copper Formula: Cu |
| ⓘ Pecoraite Formula: Ni3(Si2O5)(OH)4 References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyroaurite Formula: Mg6Fe3+2(OH)16[CO3] · 4H2O |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Heazlewoodite | 2.BB.05 | Ni3S2 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Brucite | 4.FE.05 | Mg(OH)2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Magnesite | 5.AB.05 | MgCO3 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| ⓘ | Aragonite | 5.AB.15 | CaCO3 |
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Mcguinnessite | 5.BA.10 | (Mg,Cu)2(CO3)(OH)2 |
| ⓘ | Hydromagnesite | 5.DA.05 | Mg5(CO3)4(OH)2 · 4H2O |
| ⓘ | Pyroaurite | 5.DA.50 | Mg6Fe3+2(OH)16[CO3] · 4H2O |
| Group 9 - Silicates | |||
| ⓘ | Chrysotile | 9.00. | Mg3(Si2O5)(OH)4 |
| ⓘ | Forsterite | 9.AC.05 | Mg2(SiO4) |
| ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | var. Demantoid | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | Hydroxylclinohumite | 9.AF.55 | Mg9(SiO4)4(OH)2 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | 'Clinochrysotile' | 9.ED. | Mg3(Si2O5)(OH)4 |
| ⓘ | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| ⓘ | Lizardite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| ⓘ | Pecoraite | 9.ED.15 | Ni3(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Brucite | Mg(OH)2 |
| H | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| H | ⓘ Clinochrysotile | Mg3(Si2O5)(OH)4 |
| H | ⓘ Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| H | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| H | ⓘ Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
| H | ⓘ Pecoraite | Ni3(Si2O5)(OH)4 |
| H | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| H | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| C | Carbon | |
| C | ⓘ Aragonite | CaCO3 |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| C | ⓘ Magnesite | MgCO3 |
| C | ⓘ Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
| C | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| O | Oxygen | |
| O | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| O | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| O | ⓘ Aragonite | CaCO3 |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Brucite | Mg(OH)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| O | ⓘ Clinochrysotile | Mg3(Si2O5)(OH)4 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Forsterite | Mg2(SiO4) |
| O | ⓘ Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| O | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| O | ⓘ Magnesite | MgCO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
| O | ⓘ Pecoraite | Ni3(Si2O5)(OH)4 |
| O | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| O | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Mg | Magnesium | |
| Mg | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Brucite | Mg(OH)2 |
| Mg | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Clinochrysotile | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | ⓘ Forsterite | Mg2(SiO4) |
| Mg | ⓘ Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| Mg | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Magnesite | MgCO3 |
| Mg | ⓘ Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
| Mg | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| Mg | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| Si | Silicon | |
| Si | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Clinochrysotile | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Forsterite | Mg2(SiO4) |
| Si | ⓘ Lizardite | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Pecoraite | Ni3(Si2O5)(OH)4 |
| Si | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Heazlewoodite | Ni3S2 |
| S | ⓘ Pyrite | FeS2 |
| Cl | Chlorine | |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ca | Calcium | |
| Ca | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Aragonite | CaCO3 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Fe | Iron | |
| Fe | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyroaurite | Mg6Fe23+(OH)16[CO3] · 4H2O |
| Ni | Nickel | |
| Ni | ⓘ Heazlewoodite | Ni3S2 |
| Ni | ⓘ Pecoraite | Ni3(Si2O5)(OH)4 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
Localities in this Region
- Lombardy
- Sondrio Province
- Lanzada
- Vallone del Cengiaccio (Cengiaccio; Cengiàsc; Cengiasco)
- Lanzada
- Sondrio Province
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
- AlpsAccretionary Complex
EuropeContinent
- The AlpsMountain Range
Italy
- Lombardy
- Sondrio Province
- Malenco ValleyValley
- Lanterna ValleyValley
- ValtellinaValley
- Malenco ValleyValley
- Sondrio Province
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References
Sferlùn asbestos mine, Vallone del Cengiaccio, Lanzada, Sondrio Province, Lombardy, Italy