Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland i
Regional Level Types
Ronco tunnel (Bedretto window; Ronco window) [south section] Tunnel
Ronco Hamlet
Bedretto Commune
Leventina District
Ticino Canton
Switzerland Country

Regional Level Types
Ronco tunnel (Bedretto window; Ronco window) [south section]	Tunnel
Ronco	Hamlet
Bedretto	Commune
Leventina	District
Ticino	Canton
Switzerland	Country

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Hematite

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Anatase, etc.

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Gadolinite-(Y)

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Hematite

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Anatase, etc.

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Gadolinite-(Y)

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Hematite

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Anatase, etc.

Ronco tunnel (Bedretto window; Ronco window) [south section], Ronco, Bedretto, Leventina, Ticino, Switzerland

Type:

Tunnel

Mindat Locality ID:

133274

Long-form identifier:

mindat:1:2:133274:5

GUID (UUID V4):

Other Languages:

German:

Ronco-Stollen (Bedrettofenster; Roncofenster) [Südteil], Bedretto, Bezirk Leventina, Tessin, Schweiz

Italian:

Galleria di Ronco (Finestra di Bedretto; Finestra di Ronco) [sezione sud], Bedretto, Distretto di Leventina, Ticino, Svizzera

South section of the access tunnel to the Furka base tunnel. The Bedretto tunnel was built in the 1970s as an auxiliary access drift to the Furka base tunnel. After completion of the Furka base tunnel, it was completely abandoned. The portal of the 5.22-km-long Bedretto tunnel is located close to the village of Ronco, southeast of Pizzo Rotondo.

The tunnel penetrates the Variscan Rotondo granite, which intruded the Palaeozoic polymetamorphic crystalline basement rocks of the Gotthard massif
at 294.3 ± 1.1 Ma. The major mineral components of the Rotondo granite are albite, K feldspar, quartz, muscovite and biotite. Epidote-clinozoisite, chlorite, zircon, titanite, and carbonates are present as accessory minerals. Amongst opaque ore minerals pyrite is most abundant.

Note: for the north section (Obergoms, Goms, Valais), see https://www.mindat.org/locedit.php?loc=342754

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

20 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

ⓘ Granite

Detailed Mineral List:

ⓘ Aeschynite-(Y)

Formula: Y(TiNb)O₆

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with anatase, brookite, gadolinite-(Y), magnetite, synchysite-(Ce), and xenotime-(Y).

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.P. 55, 175

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Allanite-(Ce)

Formula: (CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.30

ⓘ Anatase

Formula: TiO₂

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with aeschynite-(Y), brookite, gadolinite-(Y), magnetite, synchysite-(Ce), and xenotime-(Y).

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.175

ⓘ Bassanite

Formula: Ca(SO₄) · 0.5H₂O

Description: As fibrous tiny crystals in a thin zone between gypsum and granite.

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.66

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Brookite

Formula: TiO₂

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with aeschynite-(Y), anatase, gadolinite-(Y), magnetite, synchysite-(Ce), and xenotime-(Y).

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.175

ⓘ Cannizzarite

Formula: Pb₄₈Bi₅₆S₁₃₂

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with galena.

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.101

ⓘ Clinochlore

Formula: Mg₅Al(AlSi₃O₁₀)(OH)₈

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ 'Clinozoisite-Epidote Series'

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Gadolinite-(Y)

Formula: Y₂Fe²⁺Be₂Si₂O₁₀

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with aeschynite-(Y), anatase, brookite, magnetite, synchysite-(Ce), and xenotime-(Y).

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.175

ⓘ Galena

Formula: PbS

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with cannizzarite.

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.101

ⓘ Gypsum

Formula: CaSO₄ · 2H₂O

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.66

ⓘ 'K Feldspar'

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with aeschynite-(Y), anatase, brookite, gadolinite-(Y), synchysite-(Ce), and xenotime-(Y).

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.175

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Pyrite

Formula: FeS₂

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Quartz

Formula: SiO₂

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Rutile

Formula: TiO₂

Description: In association with anatase, brookite, REE-minerals, etc.

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.pp.86-87

ⓘ Synchysite-(Ce)

Formula: CaCe(CO₃)₂F

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with aeschynite-(Y), anatase, brookite, gadolinite-(Y), magnetite, and xenotime-(Y). From other occurrences in association with rutile, ecc.

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.P. 175, 394

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

Description: In hydrotermally altered Rotondo granite, at ca. 2255 m from the portal, in association with aeschynite-(Y), anatase, brookite, gadolinite-(Y), magnetite, and synchysite-(Ce).

References:

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.p.175

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Cannizzarite	2.JB.20	Pb₄₈Bi₅₆S₁₃₂
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	Anatase	4.DD.05	TiO₂
ⓘ	Brookite	4.DD.10	TiO₂
ⓘ	Aeschynite-(Y)	4.DF.05	Y(TiNb)O₆
Group 5 - Nitrates and Carbonates
ⓘ	Synchysite-(Ce)	5.BD.20c	CaCe(CO₃)₂F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Gypsum	7.CD.40	CaSO₄ · 2H₂O
ⓘ	Bassanite	7.CD.45	Ca(SO₄) · 0.5H₂O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
Group 9 - Silicates
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Gadolinite-(Y)	9.AJ.20	Y₂Fe²⁺Be₂Si₂O₁₀
ⓘ	Allanite-(Ce)	9.BG.05b	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Clinochlore	9.EC.55	Mg₅Al(AlSi₃O₁₀)(OH)₈
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Clinozoisite-Epidote Series'	-
ⓘ	'K Feldspar'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Bassanite	Ca(SO₄) · 0.5H₂O
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
H	ⓘ Gypsum	CaSO₄ · 2H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Clinozoisite-Epidote Series
Be	Beryllium
Be	ⓘ Gadolinite-(Y)	Y₂Fe²⁺Be₂Si₂O₁₀
C	Carbon
C	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
O	Oxygen
O	ⓘ Aeschynite-(Y)	Y(TiNb)O₆
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Anatase	TiO₂
O	ⓘ Bassanite	Ca(SO₄) · 0.5H₂O
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Brookite	TiO₂
O	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
O	ⓘ Gadolinite-(Y)	Y₂Fe²⁺Be₂Si₂O₁₀
O	ⓘ Gypsum	CaSO₄ · 2H₂O
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Clinozoisite-Epidote Series
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Clinozoisite-Epidote Series
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
Si	ⓘ Gadolinite-(Y)	Y₂Fe²⁺Be₂Si₂O₁₀
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Clinozoisite-Epidote Series
P	Phosphorus
P	ⓘ Xenotime-(Y)	Y(PO₄)
S	Sulfur
S	ⓘ Bassanite	Ca(SO₄) · 0.5H₂O
S	ⓘ Cannizzarite	Pb₄₈Bi₅₆S₁₃₂
S	ⓘ Galena	PbS
S	ⓘ Gypsum	CaSO₄ · 2H₂O
S	ⓘ Pyrite	FeS₂
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Bassanite	Ca(SO₄) · 0.5H₂O
Ca	ⓘ Gypsum	CaSO₄ · 2H₂O
Ca	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Clinozoisite-Epidote Series
Ti	Titanium
Ti	ⓘ Aeschynite-(Y)	Y(TiNb)O₆
Ti	ⓘ Anatase	TiO₂
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Brookite	TiO₂
Ti	ⓘ Rutile	TiO₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Fe	Iron
Fe	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Gadolinite-(Y)	Y₂Fe²⁺Be₂Si₂O₁₀
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Clinozoisite-Epidote Series
Y	Yttrium
Y	ⓘ Aeschynite-(Y)	Y(TiNb)O₆
Y	ⓘ Gadolinite-(Y)	Y₂Fe²⁺Be₂Si₂O₁₀
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
Nb	Niobium
Nb	ⓘ Aeschynite-(Y)	Y(TiNb)O₆
Ce	Cerium
Ce	ⓘ Allanite-(Ce)	(CaCe)(AlAlFe²⁺)O[Si₂O₇][SiO₄](OH)
Ce	ⓘ Synchysite-(Ce)	CaCe(CO₃)₂F
Pb	Lead
Pb	ⓘ Cannizzarite	Pb₄₈Bi₅₆S₁₃₂
Pb	ⓘ Galena	PbS
Bi	Bismuth
Bi	ⓘ Cannizzarite	Pb₄₈Bi₅₆S₁₃₂

Fossils

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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

Kipfer, A., and Stuker, P.(1979) Mineralien an dem Rotondogranit, TI. Schweizer Strahler, 5, 45-91

Stalder, H.A., Wagner, A., Graeser, S., Stuker, P. (1998) Mineralienlexikon der Schweiz. Wepf.

Lützenkirchen, V., and Loew, S. (2011) Late Alpine brittle faulting in the Rotondo granite (Switzerland): deformation mechanisms and fault evolution. Swiss Journal of Geosciences, 104, 31–54.

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