Acquanegra asbestos mines (Costòn d’Acquanegra; Acquanera asbestos mines), Lanzada, Sondrio Province, Lombardy, Italyi
| Regional Level Types | |
|---|---|
| Acquanegra asbestos mines (Costòn d’Acquanegra; Acquanera asbestos mines) | Group of Mines |
| Lanzada | Municipality |
| Sondrio Province | Province |
| Lombardy | Region |
| Italy | Country |
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Latitude & Longitude (WGS84):
46° 16' 42'' North , 9° 55' 0'' East
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lanzada | 1,365 (2014) | 3.8km |
| Caspoggio | 1,375 (2014) | 4.5km |
| Vassalini | 247 (2014) | 4.5km |
| Santa Elisabetta | 123 (2014) | 4.8km |
| Chiesa in Valmalenco | 2,203 (2014) | 5.4km |
Name(s) in local language(s):
Miniere di amianto dell'Acquanegra (Costòn d’Acquanegra; Miniere di amianto dell'Acquanera), Lanzada, Val Lanterna, Valmalenco (Val Malenco), Valtellina, Sondrio, Lombardia, Italia
Ancient asbestos mines, exploited in the XIX century and definitively abandoned in 1944, located at an elevation of about 2000 m on Costòn d’Acquanegra, the rocky edge lying along the western boundary of Alpe Largone Superiore plateau. Nowadays, all underground works are collapsed and minerals can be found only in the dumps.
Demantoid appears as swarms of very bright crystals, varying in colour from light green to pea green, on the walls of the serpentinite fissures. Sometimes, the crystals are embedded in calcite or asbestos. Furthermore, good demantoid crystals, varying in colour from olive green to green-yellowish, have been found on serpentinite blocks, fallen down from a large sub-vertical cleft situated in a rocky wall of Costòn d’Acquanegra, to the west of the altitude mark 2142 m (Bedognè, 1970 and 1979; Bedognè et al., 1995).
A large chromitite vein (about 70 cm thick and 10 m long), consisting of Cr-rich magnetite grains with a chromite core in association with violet chromian clinochlore, antigorite, brucite, and awaruite, has been almost completely removed as a consequence of excavation works performed by mineral collectors in search of chromian andradite inside its fissures (Bedognè et al., 1993; Sciesa, 1993).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
12 valid minerals.
Detailed Mineral List:
| ⓘ Andradite Formula: Ca3Fe3+2(SiO4)3 |
| ⓘ Andradite var. Demantoid Formula: Ca3Fe3+2(SiO4)3 |
| ⓘ Andradite var. Topazolite Formula: Ca3Fe3+2(SiO4)3 References: |
| ⓘ Antigorite Formula: Mg3(Si2O5)(OH)4 |
| ⓘ Awaruite Formula: Ni3Fe |
| ⓘ Brucite Formula: Mg(OH)2 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Chlorite Group' |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Chrysotile Formula: Mg3(Si2O5)(OH)4 |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 |
| ⓘ Clinochlore var. Chromium-bearing Clinochlore Formula: Mg5(Al,Cr)2Si3O10(OH)8 |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ Forsterite Formula: Mg2SiO4 |
| ⓘ Hydroxylclinohumite Formula: Mg9(SiO4)4(OH)2 References: |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Awaruite | 1.AE.20 | Ni3Fe |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Brucite | 4.FE.05 | Mg(OH)2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Chrysotile | 9.00. | Mg3(Si2O5)(OH)4 |
| ⓘ | Forsterite | 9.AC.05 | Mg2SiO4 |
| ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | var. Demantoid | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | var. Topazolite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | Hydroxylclinohumite | 9.AF.55 | Mg9(SiO4)4(OH)2 |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
| ⓘ | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| H | ⓘ Brucite | Mg(OH)2 |
| H | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| H | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| H | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| O | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| O | ⓘ Brucite | Mg(OH)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Forsterite | Mg2SiO4 |
| O | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
| O | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Brucite | Mg(OH)2 |
| Mg | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Forsterite | Mg2SiO4 |
| Mg | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Mg | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Si | Silicon | |
| Si | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Forsterite | Mg2SiO4 |
| Si | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Si | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
| Si | ⓘ Hydroxylclinohumite | Mg9(SiO4)4(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Fe | Iron | |
| Fe | ⓘ Andradite | Ca3Fe23+(SiO4)3 |
| Fe | ⓘ Awaruite | Ni3Fe |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Andradite var. Demantoid | Ca3Fe23+(SiO4)3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Andradite var. Topazolite | Ca3Fe23+(SiO4)3 |
| Ni | Nickel | |
| Ni | ⓘ Awaruite | Ni3Fe |
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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Acquanegra asbestos mines, Lanzada, Sondrio Province, Lombardy, Italy