Cignana Lake (Tsignanaz Lake), Valtournenche, Aosta Valley, Italy i
Regional Level Types
Cignana Lake (Tsignanaz Lake) Lake
Valtournenche Commune
Aosta Valley Autonomous Region
Italy - not defined -

Cignana Lake (Tsignanaz Lake), Valtournenche (Val Tournenche), Aosta Valley, Italy

Outcrops of rocks of an ultrahigh pressure (UHP) unit, consisting of a basement of glaucophane eclogites and of a metasedimentary cover series, in which is included a Mn deposit.
Microdiamonds occur as inclusions within garnets hosted by quartzites.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

17 valid minerals.

Detailed Mineral List:

ⓘ Aegirine-augite

Formula: (Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆

References:

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.

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Aragonite

Formula: CaCO₃

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ 'Ardennite'

References:

Reinecke, T. (1989): Mg-P-Si-rich ardennite: A high-pressure phase in eclogite-facies piemontite quartzites from Cignana, Valtournanche, Western Alps. 3rd Intern. Eclogite Conf., Würzburg, Germany, April 1989, 20-21.

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.

ⓘ Calderite

Formula: Mn²⁺₃Fe³⁺₂(SiO₄)₃

References:

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.

ⓘ Clino-suenoite

Formula: ◻{Mn²⁺₂}{Mg₅}(Si₈O₂₂)(OH)₂

References:

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.

ⓘ Coesite

Formula: SiO₂

References:

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.

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Diamond

Formula: C

Habit: microdiamonds

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Dolomite

Formula: CaMg(CO₃)₂

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Dravite

Formula: NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

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.

ⓘ Ferri-ghoseite

Formula: ◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂

References:

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.

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

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.

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Lawsonite

Formula: CaAl₂(Si₂O₇)(OH)₂ · H₂O

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Muscovite var. Phengite

Formula: KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Piemontite

Formula: (CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)

References:

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.

ⓘ Quartz

Formula: SiO₂

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Rutile

Formula: TiO₂

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Spessartine

Formula: Mn²⁺₃Al₂(SiO₄)₃

References:

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.

ⓘ 'Tourmaline'

Formula: AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z

References:

Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

References:

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.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Diamond	1.CB.10a	C
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Coesite	4.DA.35	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
ⓘ	Aragonite	5.AB.15	CaCO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
Group 9 - Silicates
ⓘ	Calderite	9.AD.25	Mn²⁺₃Fe³⁺₂(SiO₄)₃
ⓘ	Spessartine	9.AD.25	Mn²⁺₃Al₂(SiO₄)₃
ⓘ	Lawsonite	9.BE.05	CaAl₂(Si₂O₇)(OH)₂ · H₂O
ⓘ	Piemontite	9.BG.05a	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Dravite	9.CK.05	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Aegirine-augite	9.DA.20	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆
ⓘ	Clino-suenoite	9.DE.	◻{Mn²⁺₂}{Mg₅}(Si₈O₂₂)(OH)₂
ⓘ	Ferri-ghoseite	9.DE.20	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
ⓘ	Muscovite var. Phengite	9.EC.15	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
ⓘ		9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
Unclassified
ⓘ	'Tourmaline'	-	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃
ⓘ	'Apatite'	-	Ca₅(PO₄)₃(Cl/F/OH)
ⓘ	'Ardennite'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Lawsonite	CaAl₂(Si₂O₇)(OH)₂ · H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
H	ⓘ Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
H	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
H	ⓘ Clino-suenoite	◻{Mn₂²⁺}{Mg₅}(Si₈O₂₂)(OH)₂
B	Boron
B	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
B	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
C	Carbon
C	ⓘ Aragonite	CaCO₃
C	ⓘ Diamond	C
C	ⓘ Dolomite	CaMg(CO₃)₂
O	Oxygen
O	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
O	ⓘ Aragonite	CaCO₃
O	ⓘ Calderite	Mn₃²⁺Fe₂³⁺(SiO₄)₃
O	ⓘ Coesite	SiO₂
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Lawsonite	CaAl₂(Si₂O₇)(OH)₂ · H₂O
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
O	ⓘ Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
O	ⓘ Tourmaline	AD₃G₆ (T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
O	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
O	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
O	ⓘ Clino-suenoite	◻{Mn₂²⁺}{Mg₅}(Si₈O₂₂)(OH)₂
F	Fluorine
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Na	Sodium
Na	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Na	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
Mg	Magnesium
Mg	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Mg	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
Mg	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
Mg	ⓘ Clino-suenoite	◻{Mn₂²⁺}{Mg₅}(Si₈O₂₂)(OH)₂
Al	Aluminium
Al	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Al	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Lawsonite	CaAl₂(Si₂O₇)(OH)₂ · H₂O
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
Al	ⓘ Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Si	Silicon
Si	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Si	ⓘ Calderite	Mn₃²⁺Fe₂³⁺(SiO₄)₃
Si	ⓘ Coesite	SiO₂
Si	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Lawsonite	CaAl₂(Si₂O₇)(OH)₂ · H₂O
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
Si	ⓘ Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Si	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
Si	ⓘ Clino-suenoite	◻{Mn₂²⁺}{Mg₅}(Si₈O₂₂)(OH)₂
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Xenotime-(Y)	Y(PO₄)
P	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Cl	Chlorine
Cl	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
K	Potassium
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Lawsonite	CaAl₂(Si₂O₇)(OH)₂ · H₂O
Ca	ⓘ Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Apatite	Ca₅(PO₄)₃(Cl/F/OH)
Ti	Titanium
Ti	ⓘ Rutile	TiO₂
Mn	Manganese
Mn	ⓘ Calderite	Mn₃²⁺Fe₂³⁺(SiO₄)₃
Mn	ⓘ Piemontite	(CaCa)(AlAlMn³⁺)O[Si₂O₇][SiO₄](OH)
Mn	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Mn	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
Mn	ⓘ Clino-suenoite	◻{Mn₂²⁺}{Mg₅}(Si₈O₂₂)(OH)₂
Fe	Iron
Fe	ⓘ Aegirine-augite	(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆
Fe	ⓘ Calderite	Mn₃²⁺Fe₂³⁺(SiO₄)₃
Fe	ⓘ Muscovite var. Phengite	KAl_1.5(Mg,Fe)_0.5(Al_0.5Si_3.5O₁₀)(OH)₂
Fe	ⓘ Ferri-ghoseite	◻[Mn²⁺Na][Mg₄Fe³⁺]Si₈O₂₂(OH)₂
Y	Yttrium
Y	ⓘ Xenotime-(Y)	Y(PO₄)

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate

EuropeContinent

The AlpsMountain Range

Italy

Aosta Valley
- Valtournenche (Val Tournenche)Valley

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References

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.

Frezzotti, M. L. (2011): Nature Geoscience.

Elements 9 (2013) p. 475.

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