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Medel Valley, Grischun (Grisons; Graubünden), Switzerland

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Detailed Mineral List:

Albite
Formula:	NaAlSi₃O₈
Localities:	Ils Umens, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Tours, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Weinrich Minerals, Inc.. Albite from Cristallina Valley, Medel Valley, Grischun, Switzerland
Albite var: Pericline
Localities:	Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland








Anatase
Formula:	TiO₂
Localities:	Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Anhydrite
Formula:	CaSO₄
Locality:	La Siara Dadens Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Ankerite
Formula:	Ca(Fe²⁺,Mg)(CO₃)₂
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'Apatite'
Localities:	Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Cristallina Alp, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Tours, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Photo: © jo-esche 2007. Apatite from Piz Miez, Medel Valley, Grischun, Switzerland
Aragonite
Formula:	CaCO₃
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Arsenopyrite
Formula:	FeAsS
Localities:	Drual, Platta, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Stephan Wolfsried. Arsenopyrite from Medel Valley, Grischun, Switzerland
Axinite-(Fe)
Formula:	Ca₂Fe²⁺Al₂BSi₄O₁₅OH
Localities:	Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland La Siara Dadens Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Las Crunas, Fuorns, Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Stephan Wolfsried. Axinite-(Fe) from Cristallina Valley, Medel Valley, Grischun, Switzerland
'Axinite Group'
Locality:	Scópi, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Photo: © Rob Lavinsky. Axinite Group from Piz Vallatscha, Medel Valley, Grischun, Switzerland
Baryte
Formula:	BaSO₄
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Bavenite
Formula:	Ca₄Be₂Al₂Si₉O₂₆(OH)₂
Locality:	Ils Umens, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'Bementite (of Dana)'
Locality:	Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland








Beudantite
Formula:	PbFe₃(AsO₄)(SO₄)(OH)₆
Locality:	Cima della Bianca (north slope), Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Boulangerite
Formula:	Pb₅Sb₄S₁₁
Locality:	Ruinas, Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Brookite
Formula:	TiO₂
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Calcite
Formula:	CaCO₃
Localities:	Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Garviel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Cannizzarite
Formula:	Pb₄Bi₆S₁₃
Locality:	Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Cerussite
Formula:	PbCO₃
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'Chabazite'
Locality:	Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland








Chalcopyrite
Formula:	CuFeS₂
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'Chlorite Group'
Localities:	Reported from at least 8 localities in this region.








Chloritoid
Formula:	(Fe²⁺,Mg,Mn²⁺)Al₂(SiO₄)O(OH)₂
Locality:	Soliva brook bridge, Curaglia, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Clinozoisite
Formula:	{Ca₂}{Al₃}(Si₂O₇)(SiO₄)O(OH)
Locality:	Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Danburite
Formula:	CaB₂Si₂O₈
Localities:	Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Scópi, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Stephan Wolfsried. Danburite from Scópi, Medel Valley, Grischun, Switzerland
Datolite
Formula:	Ca(HBSiO₅)
Localities:	Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Scópi, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Garviel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Digenite
Formula:	Cu₉S₅
Locality:	Curaglia, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Dolomite
Formula:	CaMg(CO₃)₂
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Epidote
Formula:	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Localities:	Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Starlera, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Fibroferrite ?
Formula:	Fe³⁺(SO₄)(OH) · 5H₂O
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland - erroneously reported







Fluorapatite
Formula:	Ca₅(PO₄)₃F
Localities:	Ils Umens, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Fluorite
Formula:	CaF₂
Locality:	Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Galena
Formula:	PbS
Localities:	Drual, Platta, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Galena var: Bismuthiferous Galena
Formula:	(Pb,Bi,Ag)S
Locality:	Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Goethite
Formula:	α-Fe³⁺O(OH)
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Gold
Formula:	Au
Localities:	Ruinas, Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Hydrozincite
Formula:	Zn₅(CO₃)₂(OH)₆
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Ilmenite
Formula:	Fe²⁺TiO₃
Localities:	Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Christian Bracke. Ilmenite from Piz Miez, Medel Valley, Grischun, Switzerland
Jamesonite
Formula:	Pb₄FeSb₆S₁₄
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'K Feldspar var: Adularia'
Formula:	KAlSi₃O₈
Localities:	Reported from at least 11 localities in this region.






Photo: © Joe Budd Photography. Adularia from Cima della Bianca, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun, Switzerland
Magnesite
Formula:	MgCO₃
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Malachite
Formula:	Cu₂(CO₃)(OH)₂
Locality:	Piz Rondandura, Rondadura Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © aca. Malachite from Piz Rondandura, Rondadura Valley, Medel Valley, Grischun, Switzerland
Marcasite
Formula:	FeS₂
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'Mica Group'
Locality:	Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland








Milarite
Formula:	K₂Ca₄Al₂Be₄Si₂₄O₆₀ · H₂O
Localities:	Cristallina Alp, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz a Spescha, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Monazite-(Ce)
Formula:	(Ce,La,Nd,Th)(PO₄)
Locality:	Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Muscovite
Formula:	KAl₂(AlSi₃O₁₀)(OH)₂
Locality:	Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Opal var: Opal-AN
Formula:	SiO₂ · nH₂O
Locality:	Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Pyrite
Formula:	FeS₂
Localities:	Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Pyrrhotite
Formula:	Fe_1-xS (x = 0 to 0.17)
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Quartz
Formula:	SiO₂
Localities:	Reported from at least 9 localities in this region.






Photo: © . Quartz from Medel gorge, Medel Valley, Grischun, Switzerland
Quartz var: Rock Crystal
Locality:	Drual, Platta, Medel Valley, Grischun (Grisons; Graubünden), Switzerland








Quartz var: Smoky Quartz
Formula:	SiO₂
Localities:	Piz Garviel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Cima della Bianca (north slope), Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Cristallina Alp, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Andreas Brand. Smoky Quartz from Cristallina Valley, Medel Valley, Grischun, Switzerland
Römerite ?
Formula:	Fe²⁺Fe³⁺₂(SO₄)₄ · 14H₂O
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland - erroneously reported







Rutile
Formula:	TiO₂
Localities:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Muraun, Curaglia, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Scheelite
Formula:	Ca(WO₄)
Localities:	Medel Valley - Cristallina Valley water tunnel, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Tours, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Siderite
Formula:	FeCO₃
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Rob Lavinsky. Siderite from Medel gorge, Medel Valley, Grischun, Switzerland
Smithsonite
Formula:	ZnCO₃
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Sphalerite
Formula:	ZnS
Locality:	Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Stibnite
Formula:	Sb₂S₃
Locality:	Ruinas, Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







'Stilbite'
Locality:	Ils Umens, Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland








Synchysite-(Ce)
Formula:	Ca(Ce,La)(CO₃)₂F
Locality:	Cima della Bianca (north slope), Casatscha Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Titanite
Formula:	CaTi(SiO₄)O
Localities:	Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Miez, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Piz Vallatscha, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland






Photo: © Mattia Cairoli. Titanite from Cristallina Valley, Medel Valley, Grischun, Switzerland
'Tourmaline'
Formula:	A(D₃)G₆(T₆O₁₈)(BO₃)₃X₃Z
Localities:	Stgira Valley, Cristallina Valley, Medel Valley, Grischun (Grisons; Graubünden), Switzerland Medel gorge (Lukmanier gorge), Medel Valley, Grischun (Grisons; Graubünden), Switzerland







Zircon
Formula:	ZrSiO₄
Locality:	Stgegia Alp, Medel Valley, Grischun (Grisons; Graubünden), Switzerland

65 entries listed. 51 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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