Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Valle Largo Mine, Villalba de los Llanos, Salamanca, Castile and Leon, Spaini
Regional Level Types
Valle Largo MineMine
Villalba de los LlanosMunicipality
SalamancaProvince
Castile and LeonAutonomous Community
SpainCountry

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Latitude & Longitude (WGS84):
40° 47' 48'' North , 5° 57' 29'' West
Latitude & Longitude (decimal):
40.79679,-5.95808
GRN:
N28W04
Type:
Mine
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Villalba de los Llanos182 (2012)1.5km
Matilla de los Caños del Río681 (2012)3.4km
Carrascal del Obispo229 (2012)5.0km
Vecinos302 (2012)7.0km
Robliza de Cojos221 (2012)8.1km
Mindat Locality ID:
461354
Long-form identifier:
mindat:1:2:461354:4
GUID (UUID V4):
0


Cassiterite occurs in quartz veins and pods, with 2 to 25 cm thick, commonly featuring tourmaline aggregates at their margins, sometimes exceeding 3 cm in length. Additionally, zones of pervasive tourmalinization reaching up to 50 cm outline the vein selvages.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


2 valid minerals.

Rock Types Recorded


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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
Unclassified
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

BBoron
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
OOxygen
Oⓘ CassiteriteSnO2
Oⓘ QuartzSiO2
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
SiSilicon
Siⓘ QuartzSiO2
SnTin
Snⓘ CassiteriteSnO2

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Iberian PeninsulaPeninsula

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

[1]Bermejo, Daniel; Ortega, Lorena; Barrios Sánchez, Santos; Tavazzani, Lorenzo; Castiñeiras, Pedro; Chelle-Michou, Cyril; Crespo, Elena; dos Santos Alves, Kelvin; Gómez-Barreiro, Juan (2025) Late Variscan tectonic orogenic collapse as a trigger for Sn-W mineralizing systems. U-Pb ore geochronology across the Martinamor gneissic dome (Salamanca, Spain). Ore Geology Reviews, 184. 106762 doi:10.1016/j.oregeorev.2025.106762
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