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Hexahydrite

A valid IMA mineral species - grandfathered
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About HexahydriteHide

Formula:
MgSO4 · 6H2O
Colour:
Colourless, white, pale greenish white; colourless in transmitted light.
Lustre:
Sub-Vitreous, Pearly, Dull, Earthy
Hardness:
2 - 2½
Specific Gravity:
1.757
Crystal System:
Monoclinic
Name:
Named in 1911 by Robert Angus Alister Johnston in allusion to its composition, having six (HEXA-) molecules of water (HYDR-) in its formula.
Hexahydrite Group.
May dehydrate to starkeyite (Chou, 2005).


Unique IdentifiersHide

Mindat ID:
1891
Long-form identifier:
mindat:1:1:1891:9
GUID
(UUID V4):
6a2650aa-e6ab-40e4-b1f7-2df4fe6fd5db

Classification of HexahydriteHide

Approved, 'Grandfathered' (first described prior to 1959)
First published:
1911
7.CB.25

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
29.6.8.1

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.3.5

25 : Sulphates
3 : Sulphates of Mg

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
HhyIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of HexahydriteHide

Pronunciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of HexahydriteHide

Sub-Vitreous, Pearly, Dull, Earthy
Transparency:
Transparent, Translucent
Colour:
Colourless, white, pale greenish white; colourless in transmitted light.
Streak:
White
Hardness:
2 - 2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {100}, perfect.
Fracture:
Conchoidal
Density:
1.757 g/cm3 (Measured)    1.745 g/cm3 (Calculated)

Optical Data of HexahydriteHide

Type:
Biaxial (-)
RI values:
nα = 1.426 nβ = 1.453 nγ = 1.456
2V:
Measured: 38° , Calculated: 36°
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none
Optical Extinction:
Y = b; X ∧ c = 25°.

Chemical Properties of HexahydriteHide

Formula:
MgSO4 · 6H2O
IMA Formula:
Mg(SO4) · 6H2O

Crystallography of HexahydriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Cell Parameters:
a = 24.44 Å, b = 7.21 Å, c = 10.11 Å
β = 98.28°
Ratio:
a:b:c = 3.39 : 1 : 1.402
Unit Cell V:
1,762.94 ų (Calculated from Unit Cell)
Morphology:
Good crystals rare; sometimes thick tabular {001}. Also coarse columnar to delicately fibrous to acicular.
Twinning:
1. On {001}; 2. on {110}.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0009280HexahydriteZalkin A, Ruben H, Templeton D H (1964) The crystal structure and hydrogen bonding of magnesium sulfate hexahydrate Acta Crystallographica 17 235-2401964synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
5.45 Å(50)
5.10 Å(45)
4.88 Å(30)
4.39 Å(100)
4.16 Å(35)
4.04 Å(45)
2.94 Å(30)
Comments:
ICDD 24-719

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration4.566-4.550
6 : Secondary asteroid phases4.566-4.560
Near-surface Processes
21 : Chemically precipitated carbonate, phosphate, iron formations
25 : Evaporites (prebiotic)
Stage 7: Great Oxidation Event<2.4
45b : [Other oxidized fumarolic minerals]
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
49 : Oxic cellular biomineralization (see also #44)<0.54
50 : Coal and/or oil shale minerals<0.36
Stage 10b: Anthropogenic minerals<10 Ka
54 : Coal and other mine fire minerals (see also #51 and #56)
55 : Anthropogenic mine minerals

Type Occurrence of HexahydriteHide

General Appearance of Type Material:
Seams (to about 1 cm thick) and scattered patches in altered rock. A somewhat coarse columnar structure or sometimes delictae fibrous. No distinct crystals observed.
Place of Conservation of Type Material:
No designated type specimen.
Reference:
Johnston, R.A.A. (1911) Hexahydrite, a new mineral. Summary Report of the Geological Survey Branch of the Department of Mines For the Calendar Year 1910: 26: 256-257.

Other Language Names for HexahydriteHide

German:Hexahydrit
Simplified Chinese:六水泻盐
六水镁矾
Spanish:Hexahydrita
Traditional Chinese:六水瀉鹽
六水鎂礬

Relationship of Hexahydrite to other SpeciesHide

Other Members of this group:
BianchiteZn(SO4) · 6H2OMon. 2/m : P2/m
ChvaleticeiteMn(SO4) · 6H2OMon. 2/m : B2/b
FerrohexahydriteFeSO4 · 6H2OMon. 2/m : B2/b
MoorhouseiteCo(SO4) · 6H2OMon. 2/m : B2/b
NickelhexahydriteNi(SO4) · 6H2OMon. 2/m : B2/b

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Hexahydrite associated with EpsomiteMgSO4 · 7H2O
6 photos of Hexahydrite associated with Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]
6 photos of Hexahydrite associated with BandyliteCu[B(OH)4]Cl
6 photos of Hexahydrite associated with BlöditeNa2Mg(SO4)2 · 4H2O
6 photos of Hexahydrite associated with NitratineNaNO3
5 photos of Hexahydrite associated with PickeringiteMgAl2(SO4)4 · 22H2O
4 photos of Hexahydrite associated with SulphurS8
4 photos of Hexahydrite associated with AubertiteCuAl(SO4)2Cl · 14H2O
3 photos of Hexahydrite associated with MetavoltineK2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O
2 photos of Hexahydrite associated with Tschermigite(NH4)Al(SO4)2 · 12H2O

Related Minerals - Strunz-mindat GroupingHide

7.CB.02VoudourisiteCdSO4 · H2OMon. 2/m : P21/m
7.CB.05DwornikiteNi(SO4) · H2OMon. 2/m : B2/b
7.CB.05GunningiteZnSO4 · H2OMon. 2/m : B2/b
7.CB.05KieseriteMgSO4 · H2OMon. 2/m : B2/b
7.CB.05Poitevinite(Cu,Fe)SO4 · H2OTric. 1 : P1
7.CB.05SzmikiteMnSO4 · H2OMon. 2/m : B2/b
7.CB.05SzomolnokiteFeSO4 · H2OMon. 2/m : B2/b
7.CB.05CobaltkieseriteCoSO4 · H2OMon. 2/m : B2/b
7.CB.07SanderiteMgSO4 · 2H2OOrth. 2 2 2 : P21 21 21
7.CB.10BonattiteCuSO4 · 3H2OMon. m : Bb
7.CB.12BelogubiteCuZn(SO4)2 · 10H2OTric. 1 : P1
7.CB.15Aplowite(Co,Mn,Ni)SO4 · 4H2OMon. 2/m
7.CB.15Boyleite(Zn,Mg)SO4 · 4H2OMon. 2/m : P21/b
7.CB.15Ilesite(Mn,Zn,Fe)SO4 · 4H2OMon. 2/m
7.CB.15RozeniteFeSO4 · 4H2OMon. 2/m : P21/b
7.CB.15StarkeyiteMgSO4 · 4H2OMon. 2/m : P21/b
7.CB.15DrobeciteCdSO4 · 4H2OMon. 2/m : P21/m
7.CB.15CranswickiteMgSO4 · 4H2OMon. m : Bb
7.CB.20ChalcanthiteCuSO4 · 5H2OTric. 1 : P1
7.CB.20JôkokuiteMnSO4 · 5H2OTric. 1 : P1
7.CB.20PentahydriteMgSO4 · 5H2OTric. 1 : P1
7.CB.20SiderotilFeSO4 · 5H2OTric.
7.CB.25BianchiteZn(SO4) · 6H2OMon. 2/m : P2/m
7.CB.25ChvaleticeiteMn(SO4) · 6H2OMon. 2/m : B2/b
7.CB.25FerrohexahydriteFeSO4 · 6H2OMon. 2/m : B2/b
7.CB.25MoorhouseiteCo(SO4) · 6H2OMon. 2/m : B2/b
7.CB.25NickelhexahydriteNi(SO4) · 6H2OMon. 2/m : B2/b
7.CB.30RetgersiteNiSO4 · 6H2OTet. 4 2 2 : P41 21 2
7.CB.35BieberiteCoSO4 · 7H2OMon. 2/m : P2/m
7.CB.35BoothiteCuSO4 · 7H2OMon. 2/m : P21/b
7.CB.35MallarditeMnSO4 · 7H2OMon. 2/m : P2/m
7.CB.35MelanteriteFe2+(H2O)6SO4 · H2OMon. 2/m : P21/b
7.CB.35Zincmelanterite(Zn,Cu,Fe)SO4 · 7H2OMon. 2/m : P21/b
7.CB.35Alpersite(Mg,Cu)(SO4) · 7H2OMon. 2/m : P21/b
7.CB.40EpsomiteMgSO4 · 7H2OOrth. 2 2 2 : P21 21 21
7.CB.40GoslariteZnSO4 · 7H2OOrth. 2 2 2 : P21 21 21
7.CB.40MorenositeNiSO4 · 7H2OOrth. 2 2 2 : P21 21 21
7.CB.45AlunogenAl2(SO4)3 · 17H2OTric. 1 : P1
7.CB.45Meta-alunogenAl2(SO4)3 · 12H2OOrth.
7.CB.50AluminocoquimbiteAl2Fe2(SO4)6(H2O)12 · 6H2OTrig. 3m (3 2/m) : P3 1c
7.CB.50Lazaridisite3CdSO4 · 8H2OMon. 2/m : B2/b
7.CB.52PararaisaiteCuMg[Te6+O4(OH)2] · 6H2OMon. 2/m : P21/b
7.CB.55CoquimbiteAlFe3(SO4)6(H2O)12 · 6H2OTrig. 3m (3 2/m) : P3 1c
7.CB.55ParacoquimbiteFe4(SO4)6(H2O)12 · 6H2OTrig. 3 : R3
7.CB.55Rhomboclase(H5O2)Fe3+(SO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.CB.55RaisaiteCuMg[Te6+O4(OH)2] · 6H2OMon. 2/m : B2/b
7.CB.57CaichengyuniteFe2+3Al2(SO4)6 · 30H2OMon.
7.CB.60KorneliteFe2(SO4)3 · 7H2OMon. 2/m : P21/m
7.CB.65QuenstedtiteFe2(SO4)3 · 11H2OTric. 1 : P1
7.CB.70LauseniteFe2(SO4)3 · 5H2OMon. 2/m : P21/m
7.CB.75LishizheniteZnFe2(SO4)4 · 14H2OTric. 1 : P1
7.CB.75RömeriteFe2+Fe3+2(SO4)4 · 14H2OTric. 1 : P1
7.CB.80RansomiteCuFe2(SO4)4 · 6H2OMon. 2/m : P21/b
7.CB.85ApjohniteMn2+Al2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85BíliniteFe2+Fe3+2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85Dietrichite(Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85HalotrichiteFeAl2(SO4)4 · 22H2OMon. 2 : P2
7.CB.85PickeringiteMgAl2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.85Redingtonite(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2OMon. 2
7.CB.85Wupatkiite(Co,Mg,Ni)Al2(SO4)4 · 22H2OMon. 2/m : P21/b
7.CB.90MeridianiiteMgSO4 · 11H2OTric. 1 : P1

Fluorescence of HexahydriteHide

Fluoresces and phosphoresces dull cream white (Sterling Mine, Ogdensburg, NJ, USA).

Other InformationHide

Thermal Behaviour:
Heated in a closed tube it yields a large amount of water of neutral pH. Before the blowpipe, on charcoal, it swells and emits bubbles of vapour, but does not melt; and leaves an infusible mass, of neutral pH. When moistened with a solution of cobalt nitrate and reignited the mass becomes pink.
Notes:
Dissolves readily in cold water, giving a clear solution with a bitter salty taste. Adding ammonium chloride, this solution does not give a precipitate, but when a solution of sodium phosphate is added to the ammoniacal solution, a large amount of white precipitate of ammonium-magnesium phosphate is produced. Adding HCl and barium chloride to the starting aqueous solution produces abundant white precipitate of barium sulphate.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for HexahydriteHide

References for HexahydriteHide

Reference List:

Localities for HexahydriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Eastern Antarctica
    • Queen Maud Land
      • Lützow-Holm Bay
        • East Ongul Island
  • Western Antarctica
Argentina
 
  • Jujuy Province
    • Santa Bárbara Department
      • Cerros de Santa Bárbara
        • El Palmar hot springs
  • San Juan Province
    • Calingasta Department
      • Calingasta
        • Sierra del Tontal
    • Iglesia Department
Australia
 
  • New South Wales
    • Durham Co.
      • Moonan Brook
        • Moonan
  • Queensland
    • Charters Towers Region
      • Charters Towers
    • City of Mount Isa
      • Mount Isa
    • Mareeba Shire
  • South Australia
    • Murray Basin
      • Murray Riverlands
        • Murray Bridge
  • Victoria
    • Central Goldfields Shire
      • Dunolly
  • Western Australia
    • Wiluna Shire
Austria
 
  • Burgenland
    • Oberwart District
      • Badersdorf
  • Carinthia
    • Hermagor District
      • Kirchbach
        • Oberbuchach
  • Salzburg
    • Hallein District
      • Hallein
    • St. Johann im Pongau District
      • Bad Hofgastein
  • Styria
    • Bruck-Mürzzuschlag District
      • Breitenau am Hochlantsch
        • Hochlantsch
    • Deutschlandsberg District
      • Bad Schwanberg
        • Gressenberg
          • Schwarze Sulm
    • Leibnitz District
      • Oberhaag
        • Lieschengraben
    • Leoben District
      • Kalwang
        • Langteichengraben (Lange Teichen)
          • Teichen Mine
      • Kammern im Liesingtal
        • Seiz
          • Wolfsgruben (Wolfgruben)
    • Liezen District
      • Admont
    • Murtal District
      • Hohentauern
        • Sunk
  • Upper Austria
    • Gmunden District
      • Bad Ischl
        • Perneck
Belgium
 
  • Wallonia
    • Hainaut
      • Courcelles
Bulgaria
 
  • Montana Province
    • Chiprovtsi Municipality
Canada
 
  • British Columbia
    • Clinton Mining Division
      • Clinton
    • Kamloops Mining Division
      • Ashcroft
        • Venables Valley
      • Bonaparte River
      • Cache Creek
    • Lillooet Mining Division
      • Bonaparte River
    • Osoyoos Mining Division
      • Osoyoos
  • Manitoba
    • Sherridon District
  • Northwest Territories
    • Fort Norman
  • Nova Scotia
    • Cape Breton Co.
  • Nunavut
    • Qikiqtaaluk Region
      • Baffin Island
        • Nanisivik
  • Ontario
    • Cochrane District
      • Dundonald Township
    • Lennox and Addington County
      • Stone Mills Township
        • Sheffield Township
  • Québec
    • Abitibi-Témiscamingue
      • Abitibi RCM
        • La Motte
    • Mauricie
      • Mékinac RCM
  • Saskatchewan
  • Yukon
    • Dawson mining district
    • Whitehorse mining district
      • Kluane District
Chile
 
  • Antofagasta
    • Tocopilla Province
      • María Elena
        • Oficina María Elena
  • Arica y Parinacota
    • Arica Province
      • Los Camarones valley
  • Atacama
    • Chañaral Province
China
 
  • Qinghai
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      • Da Qaidam (Dachaidan Co.)
      • Golmud City (Ge'ermu Co.)
      • Mangnai City (Mangya Co.)
        • Lenghu Co.
  • Shanxi
    • Shuozhou
      • Pinglu District
  • Xinjiang
    • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
      • Yizhou District
    • Turpan
      • Gaochang District
        • Turfan basin (Turpan basin)
      • Shanshan Co.
        • Kanggur-Xifengshan gold belt
Costa Rica
 
  • Cartago Province
    • Oreamuno Canton
      • Irazú Volcano
Cyprus
 
  • Nicosia District
Czech Republic
 
  • Central Bohemian Region
  • Hradec Králové Region
    • Trutnov District
      • Radvanice
  • Karlovy Vary Region
    • Karlovy Vary District
      • Ostrov
        • Hanušov
          • Plavno mine
  • Moravian-Silesian Region
    • Karviná District
      • Lázně Darkov
      • Orlová
    • Nový Jičín District
      • Štramberk
    • Ostrava-City District
      • Ostrava
        • Koblov
  • Plzeň Region
    • Klatovy District
      • Sušice
  • South Moravian Region
    • Brno-Country District
      • Oslavany
      • Zastávka
    • Hodonín District
      • Žádovice
  • Vysočina Region
    • Žďár nad Sázavou District
      • Rožná
        • Rožná deposit
Egypt
 
  • New Valley Governorate
El Salvador
 
  • Sonsonate Department
France
 
  • Auvergne-Rhône-Alpes
    • Haute-Loire
      • Brioude
        • Blesle
        • Lubilhac
  • Hauts-de-France
    • Pas-de-Calais
      • Lens
  • Occitanie
    • Tarn-et-Garonne
      • Montauban
        • Orgueil
Germany
 
  • Brandenburg
    • Märkisch-Oderland
      • Bad Freienwalde
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      • Herne
        • Baukau
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        • Marsberg
    • Cologne
      • Aachen
        • Alsdorf
        • Stolberg
      • Düren
        • Untermaubach
  • Saxony-Anhalt
    • Salzlandkreis
      • Bördeaue
        • Tarthun
  • Saxony
    • Bautzen District
      • Oßling
      • Wittichenau
    • Zwickau District
      • Hartenstein
  • Thuringia
    • Greiz District
      • Kauern
      • Ronneburg
      • Weida
    • Saalfeld-Rudolstadt District
      • Lehesten
Greece
 
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    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
          • Plaka
            • Plaka Mines
          • Sounion
            • Cato Sounio mines
Greenland
 
  • Qeqqata
    • Isortoq Fjord (Søndre Isortoq)
      • Sarfartoq region
Hungary
 
  • Baranya County
    • Komló District
      • Komló
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  • Borsod-Abaúj-Zemplén County
    • Edelény District
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      • Alsótelekes
      • Kurityán
      • Rudabánya
    • Miskolc District
      • Ómassa
    • Tokaj District
      • Tarcal
  • Budapest
  • Győr-Moson-Sopron County
    • Sopron
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      • Gyöngyösoroszi
  • Nógrád County
    • Somoskőújfalu
Iceland
 
  • Southern Region
    • Rangárþing eystra
India
 
  • Madhya Pradesh
    • Jabalpur Division
      • Balaghat District
        • Baihar Tehsil
          • Malanjkand
Iran
 
  • Kerman Province
    • Sirjan County
      • Pariz
Italy
 
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      • Cassano all'Ionio (Cassano allo Ionio)
  • Piedmont
    • Metropolitan City of Turin
      • Chialamberto
      • Lessolo
        • Calea
    • Verbano-Cusio-Ossola Province
      • Antrona Schieranco
  • Sicily
    • Caltanissetta Province
      • Butera
  • Tuscany
    • Livorno Province
      • Campiglia Marittima
      • Capoliveri
        • Cape Calamita Mine
      • Rio
        • Rio Marina
          • Cavo
            • Fornacelle and Rio Albano Mines
    • Siena Province
      • Chiusdino
  • Umbria
    • Perugia Province
      • Sigillo
        • Monte Cucco
Japan
 
  • Fukushima Prefecture
    • Minamisōma City
  • Hokkaidō Prefecture
    • Hiyama Subprefecture
      • Hiyama District
        • Kaminokuni
    • Sorachi Subprefecture
      • Mikasa City
Kenya
 
  • Trans-Nzoia County
    • Mount Elgon
Mexico
 
  • Chihuahua
    • Saucillo Municipality
      • Naica
  • Durango
    • Mapimí Municipality
      • Mapimí
  • Guerrero
    • Taxco de Alarcón
Morocco
 
  • Drâa-Tafilalet Region
Namibia
 
  • Khomas Region
    • Windhoek Rural
      • Friedenau Farm 16
Nicaragua
 
  • León Department
North Macedonia
 
  • Kavadarci Municipality
    • Ržanovo
  • Lipkovo Municipality
Norway
 
  • Innlandet
    • Lom
      • Tesse
    • Sel
      • Otta
  • Oslo
    • Gamle Oslo
  • Trøndelag
    • Oppdal
      • Vinstradalen
        • Risberget
    • Orkland
      • Meldal
        • Løkken Verk
  • Vestfold og Telemark
    • Fyresdal
    • Skien
      • Flakvarp
        • Torsberg
  • Vestland
    • Kvinnherad
      • Ølve mining district
  • Viken
    • Modum
      • Modum West
Peru
 
  • Tacna
    • Jorge Basadre Province
Poland
 
  • Greater Poland Voivodeship
    • Koło County
      • Gmina Kłodawa
  • Lesser Poland Voivodeship
    • Olkusz County
      • Gmina Olkusz
  • Lower Silesian Voivodeship
    • Kłodzko County
      • Nowa Ruda
        • Słupiec Mine
    • Zgorzelec County
      • Gmina Bogatynia
  • Silesian Voivodeship
    • Mikołów County
      • Łaziska Górne
    • Rybnik
      • Niedobczyce
    • Rybnik County
      • Gmina Czerwionka-Leszczyny
    • Świętochłowice
    • Wodzisław County
      • Radlin
      • Wodzisław Śląski
Portugal
 
  • Aveiro
    • Arouca
  • Beja
    • Mértola
      • Corte do Pinto
Romania
 
  • Hunedoara County
    • Certeju de Sus
      • Bocşa Mare
Russia
 
  • Chelyabinsk Oblast
  • Kamchatka Krai
    • Yelizovsky District
  • Murmansk Oblast
  • Sakha
    • Indigirka River Basin
  • Sverdlovsk Oblast
    • Asbest
Senegal
 
  • Ziguinchor Region
Slovakia
 
  • Banská Bystrica Region
    • Lučenec District
      • Podrečany
    • Žiar nad Hronom District
      • Kremnica
  • Košice Region
    • Spišská Nová Ves District
  • Trenčín Region
    • Prievidza District
      • Handlová
South Africa
 
  • Mpumalanga
    • Nkangala District Municipality
      • Emalahleni Local Municipality
        • eMalahleni (Witbank)
Spain
 
  • Andalusia
    • Almería
      • Pechina
        • Baños de Alhamilla
    • Córdoba
      • Villanueva de Córdoba
    • Huelva
      • Minas de Riotinto
      • Nerva
  • Aragon
    • Huesca
    • Teruel
      • Teruel
    • Zaragoza
      • Calatayud
  • Castile and Leon
    • Segovia
    • Soria
      • Medinaceli
  • Catalonia
    • Tarragona
      • Priorat
        • La Vilella Alta
  • Extremadura
    • Cáceres
      • Tajo-Salor
        • Aliseda
  • Valencian Community
    • Alicante
      • Aspe
      • Orihuela
Switzerland
 
  • Grisons
    • Bernina Region
      • Brusio
      • Poschiavo
        • Selva
    • Maloja Region
      • Sils im Engadin/Segl
  • Ticino
    • Locarno
      • Brissago
  • Valais
    • Goms
      • Binn
        • Fäld
    • Martigny
      • Mont Chemin mining district
    • Sierre
      • Anniviers
        • Ayer
    • Sion
      • Savièse
  • Vaud
    • Aigle
      • Bex
Tunisia
 
  • Tataouine
Turkey
 
  • Ankara Province
    • Beypazari District
  • Konya Province
Turkmenistan
 
  • Balkan Province
UK
 
  • England
    • North Yorkshire
      • Scarborough
  • Scotland
    • South Ayrshire
      • Lendalfoot
        • Balsalloch Farm
Ukraine
 
  • Crimea
    • Alushta
    • Kerch Peninsula
      • Vulcanovka Village area
    • Saki
    • Simferopol area
      • Petropavlovka Village area
      • Ukrainka Village area (Kurtsy)
  • Donetsk Oblast
  • Sevastopol
    • Balaklava district
USA
 
  • Arizona
    • Cochise County
      • Orphan Mining District
        • Grand Canyon Village
    • Pinal County
      • San Manuel Mining District
        • San Manuel
          • San Manuel Mine (Apex Lead & Vanadium Mining Corp Mine; Quarelli group)
  • Arkansas
  • California
    • Alameda County
      • Oakland Hills (San Leandro Hills)
        • Oakland
          • Leona Heights
            • Leona Heights deposit
    • Imperial County
      • Niland
    • Inyo County
    • San Francisco County
      • San Francisco
  • Colorado
    • Fremont County
      • Canon City Mining District
        • Canon City
    • Jefferson County
      • Ralston Buttes Mining District
    • Mesa County
    • Weld County
  • Connecticut
    • Middlesex County
  • Hawaii
    • Hawaii County
  • Indiana
    • Crawford County
  • Massachusetts
    • Franklin County
      • Rowe
  • Michigan
    • Marquette County
      • Ishpeming
  • Nevada
    • Clark County
    • Lander County
      • Bullion Mining District
    • Storey County
      • Comstock Mining District
    • Washoe County
      • Pyramid Mining District
        • Burrus vein system
      • Wedekind Mining District
  • New Jersey
    • Sussex County
      • Ogdensburg
        • Sterling Hill
  • New Mexico
    • Otero County
    • Socorro County
      • Magdalena Mining District
  • New York
    • Putnam County
      • Town of Southeast
  • Ohio
    • Adams County
    • Cuyahoga County
      • Brecksville
    • Franklin County
      • Columbus
    • Hancock County
    • Highland County
    • Huron County
      • Monroeville
        • West Branch Huron River
    • Ottawa County
      • Put-In-Bay Township
        • South Bass Island
    • Sandusky County
    • Wood County
      • West Millgrove
      • Weston
    • Wyandot County
  • Pennsylvania
    • Centre County
      • State College
        • Skytop
    • Luzerne County
    • York County
      • East Manchester Township
        • Emigsville
  • Tennessee
    • Sevier County
  • Utah
    • San Juan County
      • Red Canyon Mining District
      • White Canyon Mining District
  • Virginia
    • Buckingham County
      • Gold-Pyrite Belt
    • Frederick County
    • Highland County
    • Louisa County
      • Gold-Pyrite Belt
        • Mineral
    • Rockbridge County
      • Glasgow
    • Wise County
      • East Stone Gap
  • Washington
    • Chelan County
      • Railroad Creek Mining District
    • Okanogan County
      • Oroville Mining District
  • Wyoming
    • Park County
      • Beartooth Mountains
Uzbekistan
 
  • Fergana Region
    • Uzbekistan District
  • Karakalpakstan
    • Lower Amu Darya River (Amydar'ya)
Venezuela
 
 
Mineral and/or Locality  
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