Alpe Valley, Gavia Valley, Valfurva, Sondrio Province, Lombardy, Italyi
Regional Level Types | |
---|---|
Alpe Valley | Valley |
Gavia Valley | Valley |
Valfurva | Municipality |
Sondrio Province | Province |
Lombardy | Region |
Italy | - not defined - |
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Latitude & Longitude (WGS84):
46° 22' 51'' North , 10° 28' 26'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
56022
Long-form identifier:
mindat:1:2:56022:2
GUID (UUID V4):
50b80844-953b-45a5-bd13-be89ee100bca
Other Languages:
Italian:
Valle dell'Alpe, Val di Gavia (Valle di Gavia), Valfurva, Sondrio, Lombardia, Italia
Realgar vein (up to 40 cm in thickness and more than 6 m in length) hosted in a quartz breccia horizon embedded in calcite marble.
This vein, which crops out in the upper Alpe Valley at an elevation of 2630 m, was discovered by R. Potenza in 1969 during a field survey of the area (Bianchi Potenza et al., 1981). Ravagnani and Tabacchi (1974) and other later authors roughly indicated this occurrence with the improper name of Gavia Pass (Passo di Gavia).
The mineralisation partly impregnates quartz breccia, partly forms a vein almost completely consisting of realgar with stibnite at the selvages. In the voids of the embedding breccia realgar appears as dull stocky prismatic crystals with rough faces; it is often associated with powdery or lamellar pararealgar, that at the time of its determination was a new mineral for Italy and Europe (Bianchi Potenza et al., 1981). At the vein selvages, stibnite appears as bacillar aggregates and also as acicular crystals, which are disseminated among quartz crystals in rock cavities, sometimes filled with spathic calcite. Realgar and stibnite alteration minerals are interesting and include valentinite, metastibnite, stibiconite, pharmacosiderite, and As-bearing amorphous phases. Pyrite, arsenopyrite, aragonite, graphite, anatase (tiny sapphire-blue dipyramidal crystals), and scheelite (white vitreous dipyramidal crystals) have also been observed.
Furthermore, at the entrance of an old military gallery, located about 100 m west of the realgar vein, realgar is found as unusual spherules and platelets included in hyaline quartz crystals, which in association with dolomite crystals line the walls of marble fissures.
More recently (about in 2012) centimetric rosettes of stibnite were found at an outcrop approximately 100 meter west of the Realgar outcrop.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
15 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
ⓘ Anatase Formula: TiO2 |
ⓘ Aragonite Formula: CaCO3 |
ⓘ Arsenopyrite Formula: FeAsS |
ⓘ Calcite Formula: CaCO3 |
ⓘ Dolomite Formula: CaMg(CO3)2 |
ⓘ Graphite Formula: C |
ⓘ Metastibnite Formula: Sb2S3 |
ⓘ Pararealgar Formula: As4S4 References: |
ⓘ Pharmacosiderite Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O |
ⓘ Pyrite Formula: FeS2 |
ⓘ Quartz Formula: SiO2 |
ⓘ Realgar Formula: As4S4 References: |
ⓘ Scheelite Formula: Ca(WO4) |
ⓘ 'Stibiconite' Formula: Sb3+Sb5+2O6(OH) |
ⓘ Stibnite Formula: Sb2S3 |
ⓘ Valentinite Formula: Sb2O3 |
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Graphite | 1.CB.05a | C |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Metastibnite | 2.DB.05 | Sb2S3 |
ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
ⓘ | Realgar | 2.FA.15a | As4S4 |
ⓘ | Pararealgar | 2.FA.15b | As4S4 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Valentinite | 4.CB.55 | Sb2O3 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
ⓘ | Anatase | 4.DD.05 | TiO2 |
ⓘ | 'Stibiconite' | 4.DH.20 | Sb3+Sb5+2O6(OH) |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
ⓘ | Aragonite | 5.AB.15 | CaCO3 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
Group 8 - Phosphates, Arsenates and Vanadates | |||
ⓘ | Pharmacosiderite | 8.DK.10 | KFe3+4(AsO4)3(OH)4 · 6-7H2O |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
EuropeContinent
- The AlpsMountain Range
Italy
- Lombardy
- Sondrio Province
- ValtellinaValley
- Sondrio Province
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Alpe Valley, Gavia Valley, Valfurva, Sondrio Province, Lombardy, Italy