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Schmorrasgrat-South, Ausserferrera, Ferrera, Viamala Region, Grisons, Switzerlandi
Regional Level Types
Schmorrasgrat-South- not defined -
AusserferreraVillage
FerreraMunicipality
Viamala RegionRegion
GrisonsCanton
SwitzerlandCountry

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Latitude & Longitude (WGS84):
46° 31' 58'' North , 9° 29' 52'' East
Latitude & Longitude (decimal):
46.53286,9.49798
GeoHash:
G#: u0qb8ph1w
GRN:
N32E05
Köppen climate type:
ET : Tundra
Nearest Settlements:
PlacePopulationDistance
Andeer800 (2017)9.6km
Pignieu105 (2017)10.1km
Savognin961 (2017)10.5km
Sufers156 (2017)10.9km
Cunter194 (2017)11.0km
Mindat Locality ID:
191651
Long-form identifier:
mindat:1:2:191651:8
GUID (UUID V4):
43029f78-a3f3-4c30-aabf-1ecb49907e1e
Name(s) in local language(s):
Schmorrasgrat-Süd, Ausserferrera (Farera), Val Ferrera (Ferreratal), Hinterrheintal, Graubünden (Grisons; Grischun; Grigioni), Schweiz (Suisse; Svizzera)


Schmorrasgrat is the name given to the ridge separating the Mulegn Valley (Mulin valley), a right side-valley of the main Ferrera Valley, from the Schmorras Valley (Val Schmorras), a minor southwestern branch of the Oberhalbstein (Surses), between Piz Settember to the north and Piz Alv to the south. The southern segment of the ridge, between Fuorcla Cotschna and Piz Alv, is called Schmorrasgrat-South.

Outcrops of silicate-rich Fe-Mn ores in Triassic dolomite marbles of the Middle Penninic Schams cover nappes. Traces of old exploitation. Swiss coordinates: 757.950/155.100 and 758.075/155.200.

Johninnesite is a locally abundant mineral which occurs in a restricted area (about 10 m) of the deposit. The host ore consists of hematite, jacobsite, quartz, dolomite, kutnohorite, and amphibole (magnesio-riebeckite), which is often brecciated so that quartz and dolomite grains up to 2 cm are embedded in a black matrix of the ore minerals. Johninnesite, that originally was thought to be a yellow amphibole, may be the main component, with minor quartz and carbonate, in discordant veins up to 5 cm in width, or it may occur as an accessory in quartz, carbonate, manganberzeliite-palenzonaite veins. Rare associated minerals in both kinds of veins are wallkilldellite, pink manganoan biotite and fluorcalcioroméite. Three johninnesite morphologies can be distinguished: fibrous crystals up to 4 cm in length, elongated perpendicular to the vein walls, which with quartz + carbonate grow synchronously to the opening of the fracture; rarely, similar veinlets containing prismatic crystals; small micaceous crystals (< 1 mm) which fill thin fractures over several square centimetres (Brugger et al., 1997).

Mn-rich garnet metasomatite mainly consists of garnet (although calderite has been reported, it seemes that garnet is more often a Mn-rich andradite significantly enriched in calderite component), Mn-rich aegirine augite, calcite-rhodochrosite, baryte and hematite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


25 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 Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Baryte
Formula: BaSO4
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Biotite var. Manganophyllite'
Formula: K(Fe,Mg,Mn)3AlSi3O10(OH)2
ⓘ Braunite
Formula: Mn2+Mn3+6(SiO4)O8
ⓘ Calcite
Formula: CaCO3
ⓘ Calderite
Formula: Mn2+3Fe3+2(SiO4)3
ⓘ Caryinite
Formula: (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Fluorcalcioroméite
Formula: (Ca,Na,◻)2Sb5+2(O,OH)6F
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Hematite
Formula: Fe2O3
ⓘ Jacobsite
Formula: Mn2+Fe3+2O4
ⓘ Johninnesite
Formula: Na2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2
ⓘ Kutnohorite
Formula: CaMn2+(CO3)2
ⓘ Magnesio-riebeckite
Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
ⓘ Manganberzeliite
Formula: (NaCa2)Mn2+2(AsO4)3
ⓘ Neotocite
Formula: (Mn,Fe,Mg)SiO3 · H2O
ⓘ Palenzonaite
Formula: (NaCa2)Mn2+2(VO4)3
ⓘ Paraniite-(Y)
Formula: Ca2Y(AsO4)(WO4)2
ⓘ Powellite
Formula: Ca(MoO4)
ⓘ Pyroxmangite
Formula: Mn2+SiO3
ⓘ Quartz
Formula: SiO2
ⓘ Rhodonite
Formula: CaMn3Mn[Si5O15]
ⓘ 'Roméite Group'
Formula: A2(Sb5+)2O6Z
ⓘ Tephroite
Formula: Mn2+2SiO4
ⓘ Wallkilldellite
Formula: Ca2Mn2+3(AsO4)2(OH)4 · 9H2O

Gallery:

Mn2+3Fe3+2(SiO4)3ⓘ Calderite
Na2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2ⓘ Johninnesite

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘJacobsite4.BB.05Mn2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘ'Roméite Group'4.DH.A2(Sb5+)2O6Z
ⓘFluorcalcioroméite4.DH.20(Ca,Na,◻)2Sb5+2(O,OH)6F
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘKutnohorite5.AB.10CaMn2+(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘPowellite7.GA.05Ca(MoO4)
ⓘParaniite-(Y)7.GA.15Ca2Y(AsO4)(WO4)2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘCaryinite8.AC.10(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3
ⓘManganberzeliite8.AC.25(NaCa2)Mn2+2(AsO4)3
ⓘPalenzonaite8.AC.25(NaCa2)Mn2+2(VO4)3
ⓘWallkilldellite8.DL.20Ca2Mn2+3(AsO4)2(OH)4 · 9H2O
Group 9 - Silicates
ⓘTephroite9.AC.05Mn2+2SiO4
ⓘCalderite9.AD.25Mn2+3Fe3+2(SiO4)3
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘBraunite9.AG.05Mn2+Mn3+6(SiO4)O8
ⓘAegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘMagnesio-riebeckite9.DE.25◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
ⓘJohninnesite9.DH.70Na2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2
ⓘRhodonite9.DK.05CaMn3Mn[Si5O15]
ⓘPyroxmangite9.DO.05Mn2+SiO3
ⓘNeotocite9.ED.20(Mn,Fe,Mg)SiO3 · H2O
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Biotite
var. Manganophyllite'		-K(Fe,Mg,Mn)3AlSi3O10(OH)2

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Hⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
Hⓘ Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Hⓘ Neotocite(Mn,Fe,Mg)SiO3 · H2O
Hⓘ WallkilldelliteCa2Mn32+(AsO4)2(OH)4 · 9H2O
Hⓘ Fluorcalcioroméite(Ca,Na,◻)2Sb25+(O,OH)6F
CCarbon
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ KutnohoriteCaMn2+(CO3)2
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ BaryteBaSO4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BrauniteMn2+Mn63+(SiO4)O8
Oⓘ CalciteCaCO3
Oⓘ CalderiteMn32+Fe23+(SiO4)3
Oⓘ Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3
Oⓘ DolomiteCaMg(CO3)2
Oⓘ HematiteFe2O3
Oⓘ JacobsiteMn2+Fe23+O4
Oⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Oⓘ KutnohoriteCaMn2+(CO3)2
Oⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
Oⓘ Manganberzeliite(NaCa2)Mn22+(AsO4)3
Oⓘ Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Oⓘ Neotocite(Mn,Fe,Mg)SiO3 · H2O
Oⓘ Palenzonaite(NaCa2)Mn22+(VO4)3
Oⓘ PowelliteCa(MoO4)
Oⓘ PyroxmangiteMn2+SiO3
Oⓘ QuartzSiO2
Oⓘ RhodoniteCaMn3Mn[Si5O15]
Oⓘ Roméite GroupA2(Sb5+)2O6Z
Oⓘ TephroiteMn22+SiO4
Oⓘ WallkilldelliteCa2Mn32+(AsO4)2(OH)4 · 9H2O
Oⓘ Paraniite-(Y)Ca2Y(AsO4)(WO4)2
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Fluorcalcioroméite(Ca,Na,◻)2Sb25+(O,OH)6F
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Fluorcalcioroméite(Ca,Na,◻)2Sb25+(O,OH)6F
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naⓘ Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3
Naⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Naⓘ Manganberzeliite(NaCa2)Mn22+(AsO4)3
Naⓘ Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Naⓘ Palenzonaite(NaCa2)Mn22+(VO4)3
Naⓘ Fluorcalcioroméite(Ca,Na,◻)2Sb25+(O,OH)6F
MgMagnesium
Mgⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Mgⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
Mgⓘ Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Mgⓘ Neotocite(Mn,Fe,Mg)SiO3 · H2O
AlAluminium
Alⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BrauniteMn2+Mn63+(SiO4)O8
Siⓘ CalderiteMn32+Fe23+(SiO4)3
Siⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Siⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
Siⓘ Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Siⓘ Neotocite(Mn,Fe,Mg)SiO3 · H2O
Siⓘ PyroxmangiteMn2+SiO3
Siⓘ QuartzSiO2
Siⓘ RhodoniteCaMn3Mn[Si5O15]
Siⓘ TephroiteMn22+SiO4
Siⓘ Garnet GroupX3Z2(SiO4)3
SSulfur
Sⓘ BaryteBaSO4
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
CaCalcium
Caⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ CalciteCaCO3
Caⓘ Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3
Caⓘ DolomiteCaMg(CO3)2
Caⓘ KutnohoriteCaMn2+(CO3)2
Caⓘ Manganberzeliite(NaCa2)Mn22+(AsO4)3
Caⓘ Palenzonaite(NaCa2)Mn22+(VO4)3
Caⓘ PowelliteCa(MoO4)
Caⓘ RhodoniteCaMn3Mn[Si5O15]
Caⓘ WallkilldelliteCa2Mn32+(AsO4)2(OH)4 · 9H2O
Caⓘ Paraniite-(Y)Ca2Y(AsO4)(WO4)2
Caⓘ Fluorcalcioroméite(Ca,Na,◻)2Sb25+(O,OH)6F
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
VVanadium
Vⓘ Palenzonaite(NaCa2)Mn22+(VO4)3
MnManganese
Mnⓘ BrauniteMn2+Mn63+(SiO4)O8
Mnⓘ CalderiteMn32+Fe23+(SiO4)3
Mnⓘ Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3
Mnⓘ JacobsiteMn2+Fe23+O4
Mnⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Mnⓘ KutnohoriteCaMn2+(CO3)2
Mnⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
Mnⓘ Manganberzeliite(NaCa2)Mn22+(AsO4)3
Mnⓘ Neotocite(Mn,Fe,Mg)SiO3 · H2O
Mnⓘ Palenzonaite(NaCa2)Mn22+(VO4)3
Mnⓘ PyroxmangiteMn2+SiO3
Mnⓘ RhodoniteCaMn3Mn[Si5O15]
Mnⓘ TephroiteMn22+SiO4
Mnⓘ WallkilldelliteCa2Mn32+(AsO4)2(OH)4 · 9H2O
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ CalderiteMn32+Fe23+(SiO4)3
Feⓘ HematiteFe2O3
Feⓘ JacobsiteMn2+Fe23+O4
Feⓘ Biotite var. ManganophylliteK(Fe,Mg,Mn)3AlSi3O10(OH)2
Feⓘ Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Feⓘ Neotocite(Mn,Fe,Mg)SiO3 · H2O
AsArsenic
Asⓘ Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3
Asⓘ JohninnesiteNa2Mn92+Mg7(OH)8[AsO4]2[Si6O17]2
Asⓘ Manganberzeliite(NaCa2)Mn22+(AsO4)3
Asⓘ WallkilldelliteCa2Mn32+(AsO4)2(OH)4 · 9H2O
Asⓘ Paraniite-(Y)Ca2Y(AsO4)(WO4)2
YYttrium
Yⓘ Paraniite-(Y)Ca2Y(AsO4)(WO4)2
MoMolybdenum
Moⓘ PowelliteCa(MoO4)
SbAntimony
Sbⓘ Roméite GroupA2(Sb5+)2O6Z
Sbⓘ Fluorcalcioroméite(Ca,Na,◻)2Sb25+(O,OH)6F
BaBarium
Baⓘ BaryteBaSO4
WTungsten
Wⓘ Paraniite-(Y)Ca2Y(AsO4)(WO4)2
PbLead
Pbⓘ Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
Switzerland

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

Brugger, J. (1996) The Fe, Mn, (V, Sb, As, Be, W) deposits of Val Ferrera (Graubünden, Switzerland). Unpublished PhD Thesis, University of Basel, 188 p.
Brugger, J., Berlepsch, P. (1997) Johninnesite Na^2(Mn)^9(Mn,Mg)^7(AsO^4)^2(Si^6O^17)^2(OH)^8: a new occurrence in Val Ferrera (Graubünden, Switzerland). Schweizerische Mineralogische Petrographische Mitteilungen, 77, 449-455.
Roth, P., Meisser, N. (2013) Die seltenen Mineralien der Bündner Manganvorkommen. Schweizer Strahler, 47, (3), 8-21 (in German and French).
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