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San Defendente Mount, Esino Lario, Lecco Province, Lombardy, Italyi
Regional Level Types
San Defendente MountMountain (Lost)
Esino Lario- not defined -
Lecco ProvinceProvince
LombardyRegion
ItalyCountry

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Name(s) in local language(s):Sasso di San Defendente, Esino Lario, Provincia di Lecco, Lombardia, Italia
Latitude & Longitude (WGS84): 46° 0' 22'' North , 9° 19' 11'' East
Latitude & Longitude (decimal): 46.00618,9.31974
GeoHash:G#: u0ntsp4mm
Locality type:Mountain (Lost) - last checked 2019
Deposit first discovered:1975 (approx.)
Age:236 ± 1 to 234 ± 2 Ma
Geologic Time:Late Triassic
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:Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Esino Lario698 (2014)1.7km
Perledo608 (2014)2.1km
Parlasco131 (2014)2.3km
Fiumelatte468 (2014)2.5km
Varenna764 (2014)2.8km


A very limited Pb mineralization hosted within the Triassic Esino Fm. Limestone (close to the Ladinian-Carnian boundary) Noticeably this is the only trace of the PB-Zn-F-Ba ore belt found within the "Grigna Settentrionale" Nappe.

The site is located on the southern slope of Sasso di San Defendente at 1100 m asl, originally along the road (SP 65) connecting Esino Lario to Cortenova.
Traces of the mineralization were probably totally removed or partly masked by weathering, and despite the indication provided in the original references (see) very little chances to find them still survive nowadays.

Provided location is approximate, based on the original references and some on site visits (unfruitful). Exact point to stay within a 200 meters radius.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Angelo Brambilla
Dolomite
Formula: CaMg(CO3)2
Reference: Angelo Brambilla
Galena
Formula: PbS
Reference: Scaini G. (1976): Endlichite del Sasso di San Defendente. Notizie Gruppo Mineralogico Lombardo, 7, 1 (marzo 1976), 22-23; Sani B. (1978): I "sassi" di Esino Lario. Riv. Mineral. Ital., 2 (9), 2, 46-47.
Vanadinite
Formula: Pb5(VO4)3Cl
Reference: Scaini G. (1976): Endlichite del Sasso di San Defendente. Notizie Gruppo Mineralogico Lombardo, 7, 1 (marzo 1976), 22-23; Sani B. (1978): I "sassi" di Esino Lario. Riv. Mineral. Ital., 2 (9), 2, 46-47.
Vanadinite var: Arsenatian Vanadinite
Formula: Pb5[(V,As)O4]3Cl
Reference: Scaini G. (1976): Endlichite del Sasso di San Defendente. Notizie Gruppo Mineralogico Lombardo, 7, 1 (marzo 1976), 22-23; Sani B. (1978): I "sassi" di Esino Lario. Riv. Mineral. Ital., 2 (9), 2, 46-47.
Wulfenite
Formula: Pb(MoO4)
Reference: Scaini G. (1976): Endlichite del Sasso di San Defendente. Notizie Gruppo Mineralogico Lombardo, 7, 1 (marzo 1976), 22-23; Sani B. (1978): I "sassi" di Esino Lario. Riv. Mineral. Ital., 2 (9), 2, 46-47.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Vanadinite8.BN.05Pb5(VO4)3Cl
var: Arsenatian Vanadinite8.BN.05Pb5[(V,As)O4]3Cl

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Vanadinite41.8.4.3Pb5(VO4)3Cl
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Unclassified Minerals, Mixtures, etc.
Vanadinite
var: Arsenatian Vanadinite
-Pb5[(V,As)O4]3Cl

List of minerals for each chemical element

CCarbon
C DolomiteCaMg(CO3)2
C CalciteCaCO3
OOxygen
O WulfenitePb(MoO4)
O Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
O DolomiteCaMg(CO3)2
O CalciteCaCO3
O VanadinitePb5(VO4)3Cl
MgMagnesium
Mg DolomiteCaMg(CO3)2
SSulfur
S GalenaPbS
ClChlorine
Cl Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
Cl VanadinitePb5(VO4)3Cl
CaCalcium
Ca DolomiteCaMg(CO3)2
Ca CalciteCaCO3
VVanadium
V Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
V VanadinitePb5(VO4)3Cl
AsArsenic
As Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
MoMolybdenum
Mo WulfenitePb(MoO4)
PbLead
Pb WulfenitePb(MoO4)
Pb GalenaPbS
Pb Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
Pb VanadinitePb5(VO4)3Cl

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Cretaceous
66 - 145 Ma



ID: 3185977
Mesozoic sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Comments: Dinaric Alps

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Middle Triassic
237 - 247.2 Ma



ID: 3143772
Middle Triassic limestone

Age: Middle Triassic (237 - 247.2 Ma)

Lithology: Major:{limestone}, Minor{carbonates, consolidated,claystone,marlstone}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Middle Triassic
237 - 247.2 Ma



ID: 2352985
Biogene Sedimentgesteine und Evaporite

Age: Middle Triassic (237 - 247.2 Ma)

Lithology: Biogenic carbonate rocks and evaporite

Reference: Geological Institute. Geological Map of Switzerland 1:500,000. isbn: 3906723399. University of Bern. [49]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Scaini G. (1976): Endlichite del Sasso di San Defendente. Notizie Gruppo Mineralogico Lombardo, 7, 1 (marzo 1976), 22-23.
Sani B. (1978): I "sassi" di Esino Lario. Riv. Mineral. Ital., 2 (9), 2, 46-47.


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