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Beth Mine (Beth-Ghinivert deposit), Troncea Valley, Pragelato, Metropolitan City of Turin, Piedmont, Italyi
Regional Level Types
Beth Mine (Beth-Ghinivert deposit)Mine
Troncea ValleyValley
PragelatoCommune
Metropolitan City of TurinMetropolitan City
PiedmontRegion
ItalyCountry

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Key
Latitude & Longitude (WGS84):
44° North , 6° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~11km
Locality type:
Köppen climate type:
Name(s) in local language(s):
Miniera del Beth (Giacimento del Beth-Ghinivert), Val Troncea, Pragelato/Massello, Val Chisone, Provincia di Torino, Piemonte, Italia


Copper-iron deposit located in the area of Bric di Mezzogiorno-Colle del Beth-Bric Ghinivert and mined in the period 1860-1910. Some galleries are situated in Troncea Valley (Pragelato, Chisone Valley), others are located in Massello Valley (Massello, Germanasca Valley).
Collecting is forbidden in the Troncea Valley sector, because it is part of Val Troncea Natural Park.

The Cu-Fe deposit is characterised by a 0.25–2.5 m thick zone of pyrite-rich stratiform mineralisation associated with metabasites (metagabbros, glaucophanites, and greenschist-facies metabasites) and calcschists (Novarese, 1900; Bouquet & Forette, 1973; Giacometti & Rebay , 2013). Novarese (1900) asserted that the mineralised horizon has a lateral extension of at least 400 m (parallel to dip), a mean thickness of 0.5 m, and is continuous, parallel to the direction of strata, to a depth of at least 80 m. Disseminated sulfides occur in the metabasites at the contact with the stratiform mineralisation. At least two different generations of pyrite have been recorded at Beth; common relicts preserving colloidal textures, which are typical low-temperature hydrothermal features, are overgrown by cubic metamorphic pyrite (Natale, 1966, 1969; Natale & Visetti, 1980). A sedimentary-exhalative origin on the Piedmont Ocean floor has been proposed for the Beth-Ghinivert deposit (Natale & Visetti, 1980).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Aragonite
Formula: CaCO3
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Chalcopyrite
Formula: CuFeS2
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Covellite
Formula: CuS
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Deerite
Formula: (Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Harmotome
Formula: (Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Magnesio-riebeckite
Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Olivenite
Formula: Cu2(AsO4)(OH)
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Piemontite
Formula: {Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Pyrite
Formula: FeS2
Reference: Novarese V. (1900): La miniera del Beth e Ghinivert. Rassegna mineraria della industria chimica e delle industrie mineralurgiche e metallurgiche, 12, 7, 97–99; 8 ,113–115; and 9,131–133; Lotti B. (1928): I depositi dei minerali metalliferi. Guida allo studio e alla ricerca dei giacimenti metalliferi con speciali esemplificazioni di giacimenti italiani. Seconda Edizione. Edizioni de “L’Industria Mineraria”, Stab. Tipografico A. Porcile, Genova, 236 pp.; Huttenlocher H.F. (1934): Die Erzlagerstättenzonen der Westalpen. Schweiz. Mineral. Petr. Mitt., 14, 22-149, and Beitr. Geol. Schweiz, Geotechn. Serie, Kl. Mitt., 4, 149 pp.; Natale P. (1966): Sulla pirite di alcuni giacimenti piritoso-cupriferi stratiformi delle Alpi Occidentali. Boll. Ass. Min. Supalpina, 3, 3–4, 356–363; Natale, P. (1969): Re-crystallization and remobilization in some stratiform pyrite deposits of the Western Alps. In: Valera R. (ed.), Convegno sulla rimobilizzazione dei minerali metallici e non metallici, Cagliari, August 1969. Assoc. Minerar. Sarda - Ist. Giacim. Minerar. Univ. di Cagliari, 129-148; Natale, P. Visetti A. (1980): Contributo alla conoscenza minerogenica delle piriti di origine esalativo-sedimentaria, Boll. Ass. Min. Supalpina, 17, 1, 180–210.
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Stilpnomelane
Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Pyrite2.EB.05aFeS2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Olivenite8.BB.30Cu2(AsO4)(OH)
Group 9 - Silicates
Aegirine9.DA.25NaFe3+Si2O6
Deerite9.DH.60(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
Harmotome9.GC.10(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Magnesio-riebeckite9.DE.25◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Piemontite9.BG.05a{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Stilpnomelane9.EG.40(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A2(XO4)Zq
Olivenite41.6.6.1Cu2(AsO4)(OH)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Piemontite58.2.1a.11{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2
Deerite69.2.3.3(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined islands
Stilpnomelane74.1.1.1(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Harmotome77.1.3.5(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Unclassified Minerals, Mixtures, etc.
Aragonite-CaCO3
Magnesio-riebeckite-◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Riebeckite-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

List of minerals for each chemical element

HHydrogen
H Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
H Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
H Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
H OliveniteCu2(AsO4)(OH)
H Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
CCarbon
C AragoniteCaCO3
OOxygen
O AegirineNaFe3+Si2O6
O AragoniteCaCO3
O Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
O Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
O Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
O OliveniteCu2(AsO4)(OH)
O Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
NaSodium
Na AegirineNaFe3+Si2O6
Na Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Na Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Na Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
MgMagnesium
Mg Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Mg Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
AlAluminium
Al Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Al Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Al Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SiSilicon
Si AegirineNaFe3+Si2O6
Si Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Si Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
Si Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Si Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SSulfur
S ChalcopyriteCuFeS2
S CovelliteCuS
S PyriteFeS2
KPotassium
K Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
K Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
CaCalcium
Ca AragoniteCaCO3
Ca Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Ca Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Ca Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
MnManganese
Mn Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe AegirineNaFe3+Si2O6
Fe ChalcopyriteCuFeS2
Fe Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5
Fe Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Fe PyriteFeS2
CuCopper
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu OliveniteCu2(AsO4)(OH)
AsArsenic
As OliveniteCu2(AsO4)(OH)
BaBarium
Ba Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Jervis G. (1873): I tesori sotterranei dell'Italia. Vol. 1: Regioni delle Alpi. Ed. Loescher, Torino, 410 pp.
Novarese V. (1900): La miniera del Beth e Ghinivert. Rassegna mineraria della industria chimica e delle industrie mineralurgiche e metallurgiche, 12, 7, 97–99; 8 ,113–115; and 9,131–133.
Lotti B. (1928): I depositi dei minerali metalliferi. Guida allo studio e alla ricerca dei giacimenti metalliferi con speciali esemplificazioni di giacimenti italiani. Seconda Edizione. Edizioni de “L’Industria Mineraria”, Stab. Tipografico A. Porcile, Genova, 236 pp.
Huttenlocher H.F. (1934): Die Erzlagerstättenzonen der Westalpen. Schweiz. Mineral. Petr. Mitt., 14, 22-149; Beitr. Geol. Schweiz, Geotechn. Serie, Kl. Mitt., 4, 149 pp.
Natale P. (1966): Sulla pirite di alcuni giacimenti piritoso-cupriferi stratiformi delle Alpi Occidentali. Boll. Ass. Min. Supalpina, 3, 3–4, 356–363.
Natale, P. (1969): Re-crystallization and remobilization in some stratiform pyrite deposits of the Western Alps. In: Valera R. (ed.), Convegno sulla rimobilizzazione dei minerali metallici e non metallici, Cagliari, August 1969. Assoc. Minerar. Sarda - Ist. Giacim. Minerar. Univ. di Cagliari, 129-148.
Bouquet J., Forette M.C. (1973): Sur la deerite de l’ensemble des calchschistes piémontais à Troncea (Italie). Bull. Soc. fr. Minéral. Crist., 96, 314–316.
Natale, P. Visetti A. (1980): Contributo alla conoscenza minerogenica delle piriti di origine esalativo-sedimentaria, Boll. Ass. Min. Supalpina, 17, 1, 180–210.
Piccoli G.C., Maletto G., Bosio P., Lombardo B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Alba, 607 pp.
Giacometti F., Rebay G. (2013): Structural and petrological evolution of the Beth-Ghinivert zone (Schistes Lustrés—Italian Western Alps). Rend. Online Soc. Geol. Ital., 29, 70–73.
Giacometti F., Evans K.A., Rebay G., Cliff J., Tomkins A.G., Rossetti P., Vaggelli G., Adams D.T. (2014): Sulfur isotope evolution in sulfide ores from Western Alps: Assessing the influence of subduction-related metamorphism. Geochem. Geophys. Geosyst., 15, 3808–3829, doi:10.1002/2014GC005459.

Other Regions, Features and Areas containing this locality

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