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Agueglio Alp, Esino Lario, Lecco Province, Lombardy, Italyi
Regional Level Types
Agueglio AlpWorkings (Abandoned)
Esino Lario- not defined -
Lecco ProvinceProvince
LombardyRegion
ItalyCountry

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Key
Latitude & Longitude (WGS84):
46° 0' 27'' North , 9° 19' 57'' East
Latitude & Longitude (decimal):
Locality type:
Workings (Abandoned) - last checked 2019
Deposit first discovered:
1938 (approx.)
Age:
236 ± 1 to 234 ± 2 Ma
Geologic Time:
Dating method:
presumed age Early Carnian Unconformity in the Lombardian Sud Alpine realm (western Tethys) according to several authors
Reference for age:
Assereto et al. 1977 - Stratigrafia e Metallogenesi del Settore Occidentale del distretto a Pb,Zn,F,Ba di Gorno (Alpi Bergamasche). Riv. It. Pal. Strat. v.83, n.3, pp395-532
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Parlasco131 (2014)1.5km
Esino Lario698 (2014)1.5km
Taceno508 (2014)2.9km
Vendrogno131 (2014)3.0km
Perledo608 (2014)3.0km
Name(s) in local language(s):
Alpe Agueglio, Esino Lario, Provincia di Lecco, Lombardia, Italia


The Mn ore, typically discontinuous and strata-bound, is hosted into pods of red-brown "limonitic" limestone, resulting from the infill of paleo-karsts. The ore bearing horizon is related to an important sub-aerial erosional surface of Early-Carnian (Late Triassic) age. This ore-body is pene-contemporaneous to the Pb-Zn-F-Ba deposits existing along the same Early Carnian unconformity, but it is related to paleohigh settings where prolonged sub-aerial exposure favored the development of Fe & Mn enriched paleo-soils.

The site is located at 1220 meters altitude, and can be reached by road. After parking you car, there is a path going slightly uphill (about 20 minutes walk).

2019\01\29: revised coordinates through satellite imagery, after on site visit.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Fagnani G., Scaini G. (1946) - Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2 pp. 21-22 Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973): Guida ai Minerali. Fratelli Fabbri, Ed., Milano, 208 pp.
Dolomite
Formula: CaMg(CO3)2
Reference: Fagnani G., Scaini G. (1946) - Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2 pp. 21-22 Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973): Guida ai Minerali. Fratelli Fabbri, Ed., Milano, 208 pp.
Hematite
Formula: Fe2O3
Reference: Fagnani G., Scaini G. (1946) - Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2 pp. 21-22 Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973): Guida ai Minerali. Fratelli Fabbri, Ed., Milano, 208 pp.
Manganite
Formula: Mn3+O(OH)
Description: SEM images can be found at http://imgdb.amiminerals.it/index.php?/category/108
Reference: Fagnani G., Scaini G. (1946) - Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2 pp. 21-22
'Psilomelane'
Formula: Mn, O
Reference: Giovanni Invernizzi 2005 and Giovanni Scapin 2011
Pyrolusite
Formula: Mn4+O2
Reference: Fagnani G., Scaini G. (1946) - Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2 pp. 21-22 Andreoli, F., Scaini, G. (1978). I minerali d'Italia. Rizzoli, Ed., Milano
Siderite
Formula: FeCO3
Reference: Fagnani G., Scaini G. (1946) - Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2 pp. 21-22 Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973): Guida ai Minerali. Fratelli Fabbri, Ed., Milano, 208 pp.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Manganite4.FD.15Mn3+O(OH)
Pyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Siderite5.AB.05FeCO3
Unclassified Minerals, Rocks, etc.
'Psilomelane'-Mn, O

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Manganite6.1.3.1Mn3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Unclassified Minerals, Mixtures, etc.
'Psilomelane'-Mn, O

List of minerals for each chemical element

HHydrogen
H ManganiteMn3+O(OH)
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C SideriteFeCO3
OOxygen
O ManganiteMn3+O(OH)
O PyrolusiteMn4+O2
O CalciteCaCO3
O DolomiteCaMg(CO3)2
O HematiteFe2O3
O SideriteFeCO3
O PsilomelaneMn, O
MgMagnesium
Mg DolomiteCaMg(CO3)2
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
MnManganese
Mn ManganiteMn3+O(OH)
Mn PyrolusiteMn4+O2
Mn PsilomelaneMn, O
FeIron
Fe HematiteFe2O3
Fe SideriteFeCO3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Fagnani, G., Scaini, G. (1946): Itinerari mineralogici. Ricerche di minerali di manganese (Comune di Esino Lario). Natura, volume 37, fascicolo 1/2, pp. 21-22
- Del Caldo, A., Moro, C., Gramaccioli, C.M., Boscardin, M. (1973): Guida ai Minerali. Fratelli Fabbri, Ed., Milano, 208 pp.
- Andreoli, F., Scaini, G. (1978): I minerali d'Italia. Rizzoli, Ed., Milano
- C.M. Gramaccioli - Minerali Alpini e Prealpini , vol. 1 pag. 162 e foto a pag. 380

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