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Borne del Brous, Ala di Stura, Metropolitan City of Turin, Piedmont, Italyi
Regional Level Types
Borne del Brous- not defined -
Ala di SturaCommune
Metropolitan City of TurinMetropolitan City
PiedmontRegion
ItalyCountry

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Key
Latitude & Longitude (WGS84):
45° North , 7° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~6km
Köppen climate type:
Name(s) in local language(s):
Borne del Brous, Ala di Stura, Val d'Ala, Valli di Lanzo, Torino, Piemonte, Italia


Rodingite dykes in ophiolitic rocks.
This occurrence, consisting of some rodingite dykes and disseminated erratic blocks, is situated in the upper part of a lateral valley, locally known as “Vallone delle Serpi” (i.e. the valley of snakes), at the foot of Monte Turn and not far from the boundary between the municipalities of Ala di Stura and Ceres. It is named after the sole landmark in its nearness, the “Borne del Brous”, two cavities excavated in the past in an outrcrop of soapstone (one of these cavities is locally known as “Borna del Selvai”, literally "the Savage’s Cave", because it would have been the dwelling place of a misanthropic dwarf).
Minerals from this locality were firstly described by Strüver (1871), who expressed the opinion that it was the source of the best specimens of garnet in all Ala valley. Diopside crystals, quite different in habit from those of Testa Ciarva and Saulera, were studied by La Valle (1886).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Girolami, C. (2006). I minerali delle Valli di Lanzo. Stampato in proprio.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Maletto G.,Meda F.,Pelizzone G.-I minerali della Val d'Ala -Ellezeta (1976)
Calcite
Formula: CaCO3
Reference: Maletto, G., Piccoli G.C. (2014): Minerali in Val d’Ala. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 224 pp. + 1 folded map.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Maletto G.,Meda F.,Pelizzone G.-I minerali della Val d'Ala -Ellezeta (1976)
Diopside
Formula: CaMgSi2O6
Reference: Maletto G.,Meda F.,Pelizzone G.-I minerali della Val d'Ala -Ellezeta (1976)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Maletto, G., Piccoli G.C. (2014): Minerali in Val d’Ala. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 224 pp. + 1 folded map.
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Matteo Chinellato
Grossular var: Hessonite
Formula: Ca3Al2(SiO4)3
Reference: Matteo Chinellato
Hydroxylapatite
Formula: Ca5(PO4)3(OH)
Reference: Maletto, G., Piccoli G.C. (2014): Minerali in Val d’Ala. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 224 pp. + 1 folded map.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Maletto, G., Piccoli G.C. (2014): Minerali in Val d’Ala. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 224 pp. + 1 folded map.
Titanite
Formula: CaTi(SiO4)O
Reference: Girolami, C. (2006). I minerali delle Valli di Lanzo. Stampato in proprio.
Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Reference: Maletto G.,Meda F.,Pelizzone G.-I minerali della Val d'Ala -Ellezeta (1976)

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Hydroxylapatite8.BN.05Ca5(PO4)3(OH)
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Grossular9.AD.25Ca3Al2(SiO4)3
var: Hessonite9.AD.25Ca3Al2(SiO4)3
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Vesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals arranged by Dana 8th Edition classification

Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Hydroxylapatite41.8.1.3Ca5(PO4)3(OH)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Grossular51.4.3b.2Ca3Al2(SiO4)3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Vesuvianite58.2.4.1Ca19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Grossular
var: Hessonite
-Ca3Al2(SiO4)3

List of minerals for each chemical element

HHydrogen
H VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
H ClinochloreMg5Al(AlSi3O10)(OH)8
H ApatiteCa5(PO4)3(Cl/F/OH)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H PrehniteCa2Al2Si3O10(OH)2
H HydroxylapatiteCa5(PO4)3(OH)
CCarbon
C CalciteCaCO3
OOxygen
O VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
O ClinochloreMg5Al(AlSi3O10)(OH)8
O DiopsideCaMgSi2O6
O ApatiteCa5(PO4)3(Cl/F/OH)
O TitaniteCaTi(SiO4)O
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O GrossularCa3Al2(SiO4)3
O Grossular (var: Hessonite)Ca3Al2(SiO4)3
O CalciteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O PrehniteCa2Al2Si3O10(OH)2
O HydroxylapatiteCa5(PO4)3(OH)
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mg VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg DiopsideCaMgSi2O6
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
AlAluminium
Al VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al GrossularCa3Al2(SiO4)3
Al Grossular (var: Hessonite)Ca3Al2(SiO4)3
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al PrehniteCa2Al2Si3O10(OH)2
SiSilicon
Si VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si DiopsideCaMgSi2O6
Si TitaniteCaTi(SiO4)O
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si GrossularCa3Al2(SiO4)3
Si Grossular (var: Hessonite)Ca3Al2(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si PrehniteCa2Al2Si3O10(OH)2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P HydroxylapatiteCa5(PO4)3(OH)
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Ca VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Ca DiopsideCaMgSi2O6
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca TitaniteCaTi(SiO4)O
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca GrossularCa3Al2(SiO4)3
Ca Grossular (var: Hessonite)Ca3Al2(SiO4)3
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca PrehniteCa2Al2Si3O10(OH)2
Ca HydroxylapatiteCa5(PO4)3(OH)
TiTitanium
Ti TitaniteCaTi(SiO4)O
FeIron
Fe VesuvianiteCa19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Strüver, G. (1871): Die Minerallagerstatten des Alathales in Piemont. Neues Jahrb. Miner. Geol. Pal., 337-352.
- La Valle, G. (1886): Sul diopside di Val d'Ala. Mem. R. Acc. Naz. Lincei, [4], 3, 226-263.
- Repossi, Emilio (1919): La val d'Ala ed i suoi minerali. Natura, 10, 89-132.
- Dal Piaz, G. V. (1967): Le "granatiti" (rodingiti l.s.) nelle serpentine delle Alpi occidentali italiane. Memorie della Società Geologica Italiana, 6, 267-313.
- De Michele, V. (1974): Guida mineralogica d'Italia. Ed. De Agostini, Novara, 2 vol., 408 pp.
- Gramaccioli, C.M. (1975): Minerali alpini e prealpini. Istituto Italiano Edizioni Atlas, Bergamo, 2 vol., 472 pp.
- Maletto, G., Meda, F., Pelizzone, G. (1976): I minerali della Val d'Ala. 4a edizione. Feder. Naz. Gr. Mineral. Paleont. It., Ed., Tipografia Ellezeta, Torino, 72 pp.
- Gramaccioli, C.M. (1979): Minerals of the Alpine rodingites of Italy. Min. Record, 10, 2, 85-89.
- Girolami, C. (2006): I minerali delle Valli di Lanzo. Stampato in proprio.
- Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.
- Maletto, G., Piccoli G.C. (2014): Minerali in Val d’Ala. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 224 pp. + 1 folded map.

Other Regions, Features and Areas containg this locality

Eurasian PlateTectonic Plate
EuropeContinent
Italy
  • Piedmont

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