Scortaseo (Scurtaseu) deposit, Selva, Poschiavo, Bernina Region, Grisons, Switzerlandi
| Regional Level Types | |
|---|---|
| Scortaseo (Scurtaseu) deposit | Deposit |
| Selva | Hamlet |
| Poschiavo | Municipality |
| Bernina Region | Region |
| Grisons | Canton |
| Switzerland | Country |
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Latitude & Longitude (WGS84):
46° 17' 26'' North , 10° 3' 0'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Name(s) in local language(s):
Scortaseo (Scurtaseu), Selva, Poschiavo (Puschlav), Valle di Poschiavo (Valposchiavo), Graubünden (Grisons; Grischun), Schweiz (Suisse, Svizzera)
Nephrite-talc deposit at 1570-1640 m a.s.l., south of Scortaseo (Scurtaseu) locality and southeast of Alp Braita, at the tectonic contact between gneiss and Triassic dolomite marble. Manual excavations were carried out on one of the two lenses in the middle of the 1940s; trenches and some galleries were mechanically dug in the 1960s.
The deposit consists of two large nephrite-talc lenses discordant with the main schistosity, 100 m long, 3-5 m wide and at least 30 m deep. An unusual albitite-nephrite breccia occurs in the contact zone.
Nephrite occurring in talc rock mainly appears as very pale green nephrite masses showing bendles and tufts with finely felted structure. Other minerals present are calcite and talc. The amphibole forming this nephrite is an almost pure (Fe- and Al-free) tremolite.
Apatite, titanite, calcite, quartz, magnetite, and pyrite can occur as accessory minerals in the rocks (breccia, schist, etc.) of the contact zone; quartz, muscovite, chlorite, albite, talc, and calcite in dolomite marble; actinolite and almandine-pyrope garnet in gneiss.
Some jewels and carved decorative objects have been obtained from the Scortaseo nephrite jade.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
12 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:
| ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ 'Almandine-Pyrope Series' |
| ⓘ 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) |
| ⓘ Calcite Formula: CaCO3 References: |
| ⓘ 'Chlorite Group' |
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Pyrite Formula: FeS2 References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Romanèchite Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10 |
| ⓘ Talc Formula: Mg3Si4O10(OH)2 References: |
| ⓘ Titanite Formula: CaTi(SiO4)O |
| ⓘ Tremolite Formula: ◻Ca2Mg5(Si8O22)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Romanèchite | 4.DK.10 | (Ba,H2O)2(Mn4+,Mn3+)5O10 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 9 - Silicates | |||
| ⓘ | Titanite | 9.AG.15 | CaTi(SiO4)O |
| ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ | Tremolite | 9.DE.10 | ◻Ca2Mg5(Si8O22)(OH)2 |
| ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Almandine-Pyrope Series' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Romanèchite | (Ba,H2O)2(Mn4+,Mn3+)5O10 |
| H | ⓘ Talc | Mg3Si4O10(OH)2 |
| H | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Romanèchite | (Ba,H2O)2(Mn4+,Mn3+)5O10 |
| O | ⓘ Talc | Mg3Si4O10(OH)2 |
| O | ⓘ Titanite | CaTi(SiO4)O |
| O | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | ⓘ Almandine-Pyrope Series | |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Mg | Magnesium | |
| Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
| Mg | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Mg | ⓘ Almandine-Pyrope Series | |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Almandine-Pyrope Series | |
| Si | Silicon | |
| Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Talc | Mg3Si4O10(OH)2 |
| Si | ⓘ Titanite | CaTi(SiO4)O |
| Si | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | ⓘ Almandine-Pyrope Series | |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Cl | Chlorine | |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Titanite | CaTi(SiO4)O |
| Ca | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Titanite | CaTi(SiO4)O |
| Mn | Manganese | |
| Mn | ⓘ Romanèchite | (Ba,H2O)2(Mn4+,Mn3+)5O10 |
| Fe | Iron | |
| Fe | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Almandine-Pyrope Series | |
| Ba | Barium | |
| Ba | ⓘ Romanèchite | (Ba,H2O)2(Mn4+,Mn3+)5O10 |
Other Regions, Features and Areas containing this locality
Eurasian PlateTectonic Plate
- AlpsAccretionary Complex
EuropeContinent
- The AlpsMountain Range
Switzerland
- Grisons
- Bernina Region
- Val PoschiavoValley
- Bernina Region
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