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Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy i
Regional Level Types
Tanno Pegmatitic Field Pegmatite
Chiavenna Municipality
Sondrio Province Province
Lombardy Region
Italy Country

Regional Level Types
Tanno Pegmatitic Field	Pegmatite
Chiavenna	Municipality
Sondrio Province	Province
Lombardy	Region
Italy	Country

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View of the railway

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The path for the collecting site

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The signs for Val Bregaglia trail

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The town of Chiavenna

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

View of the railway

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The path for the collecting site

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The signs for Val Bregaglia trail

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The town of Chiavenna

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

View of the railway

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

The path for the collecting site

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

Latitude & Longitude (WGS84):

46° 18' 52'' North , 9° 24' 16'' East

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Dfc : Subarctic climate

Nearest Settlements:

Place	Population	Distance
Chiavenna	7,239 (2014)	0.8km
Prata Centro	1,224 (2014)	0.9km
Prata Camportaccio	2,727 (2012)	1.1km
San Vittore	1,670 (2014)	1.8km
Prosto	998 (2014)	2.1km

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Club	Location	Distance
Club Cercatori di Minerali e Fossili Ticino	Viganello, Ticino	47km

Mindat Locality ID:

49543

Long-form identifier:

mindat:1:2:49543:2

GUID (UUID V4):

Other/historical names associated with this locality:

Tanno pegmatite

Name(s) in local language(s):

Tanno, Chiavenna, Valchiavenna, Sondrio, Lombardia, Italia

Several LCT pegmatite and aplite dykes cropping out near Tanno, SE of Chiavenna.

Location is approximate, based on satellite imagery and topo maps. Search area is in the woods, on boulders fallen from a huge adjacent rock-cliff (with visible pegmatite veins), both above and below the path going to Lotteno.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

38 valid minerals. 1 (TL) - type locality of 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

ⓘ Amphibolite

ⓘ 'Pegmatite'

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

Arrigoni, Francesco; Fumagalli, Patrizia; Zanchetta, Stefano; Guastoni, Alessandro; others (2020) Melt-rock interaction between granitic pegmatites and hosting amphibolites from the Chiavenna Ophiolitic Unit (Tanno Pegmatitic Field, Central Alps, North Italy). Ofioliti, 45 (1). 13-23

ⓘ 'Allanite Group'

Formula: (A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

References:

ⓘ Almandine

Formula: Fe²⁺₃Al₂(SiO₄)₃

References:

Bondi, Mirella, Griffin, William L., Mattioli, Vittorio, Mottana, Annibale (1983) Chiavennite, CaMnBe2Si5O13(OH)2·2H2O, a new mineral from Chiavenna (Italy) American Mineralogist, 68 (5-6) 623-627

ⓘ Anatase

Formula: TiO₂

References:

Neschen, Peter (n.d.) Personal communication.

ⓘ Arsenopyrite

Formula: FeAsS

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Bavenite

Formula: Ca₄Be₂Al₂Si₉O₂₆(OH)₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

Guastoni, Alessandro, Pozzi, Giacomo, Secco, Luciano, Schiazza, Mariangela, Pennacchioni, Giorgio, Fioretti, Anna Maria, Nestola, Fabrizio (2016) Monazite-(Ce) and xenotime-(Y) from an LCT, NYF tertiary pegmatite field: Evidence from a regional study in the Central Alps (Italy and Switzerland). The Canadian Mineralogist, 54 (4). 863-877 doi:10.3749/canmin.1600021

ⓘ Bertrandite

Formula: Be₄(Si₂O₇)(OH)₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Beryl

Formula: Be₃Al₂(Si₆O₁₈)

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ 'Biotite'

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

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Bismuthinite

Formula: Bi₂S₃

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Chabazite-Ca

Formula: (Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Chiavennite (TL)

Formula: CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O

Type Locality:

References:

ⓘ Chrysoberyl

Formula: BeAl₂O₄

References:

Bedognè F., Montrasio A., Sciesa E. (1995): I minerali della provincia di Sondrio e della Bregaglia grigionese: Val Bregaglia, Val Masino, Val Codera e Valle Spluga. Bettini, Sondrio, 300 pp.pp.80-80

ⓘ Columbite-(Fe)

Formula: Fe²⁺Nb₂O₆

References:

ⓘ Columbite-(Mn)

Formula: Mn²⁺Nb₂O₆

References:

ⓘ Edenite

Formula: NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂

References:

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

ⓘ Gahnite

Formula: ZnAl₂O₄

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

References:

ⓘ 'K Feldspar'

References:

ⓘ Laumontite

Formula: CaAl₂Si₄O₁₂ · 4H₂O

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Magnesio-hornblende

Formula: ◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂

References:

ⓘ 'Microlite Group'

Formula: A_2-mTa₂X_6-wZ_-n

References:

(n.d.) Collezionare minerali. Hobby & Work.

ⓘ Milarite

Formula: K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]

References:

Boscardin, Matteo, Mattioli, Vittorio (1982) Neufunde aus Italien. Calzirit, Milarit und Compreignacit aus den italienischen Zentralalpen [New finds from Italy. Calzirite, Milarite and Compreignacite from the Italian Central Alps]. Lapis, 7 (10) 15-16

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Monazite-(Ce)

Formula: Ce(PO₄)

References:

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Opal

Formula: SiO₂ · nH₂O

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Orthoclase

Formula: K(AlSi₃O₈)

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Pargasite

Formula: NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂

References:

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

References:

ⓘ Pyrite

Formula: FeS₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ 'Pyrochlore Supergroup'

Formula: A_2-mD₂X_6-wZ_1-n

References:

ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'

Formula: (Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)

References:

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Quartz

Formula: SiO₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Rutile

Formula: TiO₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Schorl

Formula: NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

References:

ⓘ Siderite

Formula: FeCO₃

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Spessartine

Formula: Mn²⁺₃Al₂(SiO₄)₃

References:

ⓘ Thorite

Formula: Th(SiO₄)

References:

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ Uraninite

Formula: UO₂

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

ⓘ 'Uranmicrolite (of Hogarth 1977)'

Formula: (Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇

References:

(n.d.) Collezionare minerali. Hobby & Work.

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

References:

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

Gallery:

Be₃Al₂(Si₆O₁₈)ⓘ Beryl

Beryl

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

Beryl

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

Beryl

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

ZnAl₂O₄ⓘ Gahnite

Gahnite

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

Gahnite

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

Gahnite

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Bismuthinite	2.DB.05	Bi₂S₃
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
Group 4 - Oxides and Hydroxides
ⓘ	'Microlite Group'	4.00.	A_2-mTa₂X_6-wZ_-n
ⓘ	Chrysoberyl	4.BA.05	BeAl₂O₄
ⓘ	Gahnite	4.BB.05	ZnAl₂O₄
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Rutile	4.DB.05	TiO₂
ⓘ	Columbite-(Fe)	4.DB.35	Fe²⁺Nb₂O₆
ⓘ	Columbite-(Mn)	4.DB.35	Mn²⁺Nb₂O₆
ⓘ	Anatase	4.DD.05	TiO₂
ⓘ	Uraninite	4.DL.05	UO₂
Group 5 - Nitrates and Carbonates
ⓘ	Siderite	5.AB.05	FeCO₃
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
ⓘ	Monazite-(Ce)	8.AD.50	Ce(PO₄)
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
Group 9 - Silicates
ⓘ	Almandine	9.AD.25	Fe²⁺₃Al₂(SiO₄)₃
ⓘ	Spessartine	9.AD.25	Mn²⁺₃Al₂(SiO₄)₃
ⓘ	Thorite	9.AD.30	Th(SiO₄)
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Bertrandite	9.BD.05	Be₄(Si₂O₇)(OH)₂
ⓘ	Beryl	9.CJ.05	Be₃Al₂(Si₆O₁₈)
ⓘ	Schorl	9.CK.05	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Milarite	9.CM.05	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
ⓘ	Magnesio-hornblende	9.DE.10	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
ⓘ	Edenite	9.DE.15	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
ⓘ	Pargasite	9.DE.15	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
ⓘ	Bavenite	9.DF.25	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
ⓘ	Orthoclase	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O
ⓘ	Chabazite-Ca	9.GD.10	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
ⓘ	Chiavennite (TL)	9.GF.25	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
Unclassified
ⓘ	'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'	-	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Uranmicrolite (of Hogarth 1977)'	-	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
ⓘ	'K Feldspar'	-
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃
ⓘ	'Pyrochlore Supergroup'	-	A_2-mD₂X_6-wZ_1-n
ⓘ	'Allanite Group'	-	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
H	ⓘ Bertrandite	Be₄(Si₂O₇)(OH)₂
H	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
H	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
H	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
H	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
H	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
H	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
Be	Beryllium
Be	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Be	ⓘ Bertrandite	Be₄(Si₂O₇)(OH)₂
Be	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Be	ⓘ Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
Be	ⓘ Chrysoberyl	BeAl₂O₄
Be	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
B	Boron
B	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
C	Carbon
C	ⓘ Siderite	FeCO₃
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Anatase	TiO₂
O	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
O	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
O	ⓘ Bertrandite	Be₄(Si₂O₇)(OH)₂
O	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	ⓘ Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
O	ⓘ Chrysoberyl	BeAl₂O₄
O	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
O	ⓘ Columbite-(Fe)	Fe²⁺Nb₂O₆
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Gahnite	ZnAl₂O₄
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Columbite-(Mn)	Mn²⁺Nb₂O₆
O	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
O	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
O	ⓘ Monazite-(Ce)	Ce(PO₄)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Orthoclase	K(AlSi₃O₈)
O	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Siderite	FeCO₃
O	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
O	ⓘ Thorite	Th(SiO₄)
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Uraninite	UO₂
O	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
O	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
Na	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
Na	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Na	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
Na	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
Mg	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Mg	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Al	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Chrysoberyl	BeAl₂O₄
Al	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
Al	ⓘ Gahnite	ZnAl₂O₄
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Al	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Al	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Orthoclase	K(AlSi₃O₈)
Al	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Al	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Si	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Si	ⓘ Bertrandite	Be₄(Si₂O₇)(OH)₂
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Si	ⓘ Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
Si	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Si	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Orthoclase	K(AlSi₃O₈)
Si	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Si	ⓘ Thorite	Th(SiO₄)
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Si	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Monazite-(Ce)	Ce(PO₄)
P	ⓘ Xenotime-(Y)	Y(PO₄)
S	Sulfur
S	ⓘ Arsenopyrite	FeAsS
S	ⓘ Bismuthinite	Bi₂S₃
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Orthoclase	K(AlSi₃O₈)
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
K	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
Ca	Calcium
Ca	ⓘ Bavenite	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Ca	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
Ca	ⓘ Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
Ca	ⓘ Edenite	NaCa₂Mg₅(Si₇Al)O₂₂(OH)₂
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	ⓘ Magnesio-hornblende	◻Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂
Ca	ⓘ Milarite	K(◻H₂O)Ca₂(Be₂Al)[Si₁₂O₃₀]
Ca	ⓘ Pargasite	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
Ca	ⓘ Chabazite-Ca	(Ca,K₂,Na₂)₂[Al₂Si₄O₁₂]₂ · 12H₂O
Ti	Titanium
Ti	ⓘ Anatase	TiO₂
Ti	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Rutile	TiO₂
Ti	ⓘ Titanite	CaTi(SiO₄)O
Mn	Manganese
Mn	ⓘ Chiavennite	CaMnBe₂Si₅O₁₃(OH)₂ · 2H₂O
Mn	ⓘ Columbite-(Mn)	Mn²⁺Nb₂O₆
Mn	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Fe	Iron
Fe	ⓘ Arsenopyrite	FeAsS
Fe	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Columbite-(Fe)	Fe²⁺Nb₂O₆
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Fe	ⓘ Siderite	FeCO₃
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Zn	Zinc
Zn	ⓘ Gahnite	ZnAl₂O₄
As	Arsenic
As	ⓘ Arsenopyrite	FeAsS
Y	Yttrium
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)
Nb	Niobium
Nb	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
Nb	ⓘ Columbite-(Fe)	Fe²⁺Nb₂O₆
Nb	ⓘ Columbite-(Mn)	Mn²⁺Nb₂O₆
Nb	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
Ce	Cerium
Ce	ⓘ Monazite-(Ce)	Ce(PO₄)
Ta	Tantalum
Ta	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
Ta	ⓘ Microlite Group	A_2-mTa₂X_6-wZ_-n
Ta	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇
Bi	Bismuth
Bi	ⓘ Bismuthinite	Bi₂S₃
Th	Thorium
Th	ⓘ Thorite	Th(SiO₄)
U	Uranium
U	ⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)	(Ca,Na,U)₂(Ti, Nb,Ta)₂O₆Z(OH)
U	ⓘ Uraninite	UO₂
U	ⓘ Uranmicrolite (of Hogarth 1977)	(Ca,U,Na)_2-x(Ta,Nb)₂(O,OH)₇

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate

AlpsAccretionary Complex

EuropeContinent

The AlpsMountain Range

Italy

Lombardy
- Sondrio Province
  - ValchiavennaGroup of Valleies

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References

Bondi M, Griffin W L, Mattioli V, Mottana A (1981) Un nuovo minerale manganesifero nelle pegmatiti di Chiavenna, Alpi Retiche. Nota preliminare. Rendiconti della Società Italiana di Mineralogia e Petrologia 37, 669-675.

Bedognè, F. (1991) I minerali dei differenziati acidi di Tanno (Val Chiavenna). Il Naturalista Valtellinese - Atti Mus. civ. Stor. nat. Morbegno, 2, 35-45.

Bedognè F., Montrasio A., Sciesa E. (1995): I minerali della provincia di Sondrio e della Bregaglia grigionese: Val Bregaglia, Val Masino, Val Codera e Valle Spluga. Bettini, Sondrio, 300 pp.

Bedognè, F., Montrasio, A., Sciesa, E. (2006) I minerali della media-alta Valtellina, delle Orobie valtellinesi e della Val Poschiavo. Aggiornamenti sulle altre località della provincia di Sondrio. Bettini, Sondrio, 255 pp.

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Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, ItalyiRegional Level TypesTanno Pegmatitic FieldPegmatite ChiavennaMunicipality Sondrio ProvinceProvince LombardyRegion ItalyCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Other Regions, Features and Areas containing this locality

References

Tanno Pegmatitic Field, Chiavenna, Sondrio Province, Lombardy, Italy i
Regional Level Types
Tanno Pegmatitic Field Pegmatite
Chiavenna Municipality
Sondrio Province Province
Lombardy Region
Italy Country