Jianshuiite

Formation: rough
Location: Ojos Negros iron mines, Ojos Negros, Teruel, Aragón, Spain
Size: KS 2

Karibibite

Formation: xx
Location: Oumlil Mine, Oumlil, Bou Azer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
Size: KS 4

Karpholite

Formation: (xx)
Location: Valgraveglia Mine (Gambatesa Mine), Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy
Size: KS 2

Karyinite

Formation: rough
Location: Langban, Värmland, Sweden
Size: KS 4

Kasolite

Formation: xx
Location: Musonoi Mine, Kolwezi, Kolwezi mining district, Lualaba, Congo
Size: micro-mount
(Type locality)

Kayrobertsonite

Formation: xx
Location: Hagendorf South Pegmatite, Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany
Size: micro-mount
(Type locality)

(Sold)

Kazakovite

Formation: rough
Location: Karnasurt Mt, Lovozero Massif, Murmanskaya Oblast', Northern Region, Russian Federation
Size: micro-mount
(Type locality)

(Sold)

Keyite

Formation: xx
Location: Tsumeb, Otjikoto Region, Namibia
Size: micro-mount
(Type locality)

(Sold)

Khinite

Formation: xx
Location: Bird Nest drift, Otto Mountain, Baker, Soda Mts, Silver Lake District, San Bernardino Co., California, United States
Size: micro-mount

Kinoshitalite

Formation: (xx)
Location: Langban, Värmland, Sweden
Size: KS 2

(Sold)

Kobokoboite

Formation: xx
Location: Kobokobo pegmatite, Mwenga, South Kivu, Congo
Size: KS 4
(Type locality)

Kröhnkite

Formation: xx
Location: La Vendida Mine, Sierra Gorde, Chile
Size: KS 6

Kröhnkite

Formation: xx
Location: La Vendida Mine, Sierra Gorde, Chile
Size: KS 6

Kröhnkite

Formation: xx
Location: La Vendida Mine, Sierra Gorde, Chile
Size: KS 6

Kupletskite

Formation: (xx)
Location: Lysebo, Farris, Hedrum , Larvik, Vestfold, Norway
Size: KS 4

Kupletskite

Formation: (xx)
Location: Lysebo, Farris, Hedrum , Larvik, Vestfold, Norway
Size: KS 4

Kupletskite

Formation: (xx)
Location: Lysebo, Farris, Hedrum , Larvik, Vestfold, Norway
Size: KS 4

Kyrgyzstanite

Formation: (xx)
Location: Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion District Mines, Lavrion District, Attikí Prefecture, Greece
Size: KS 2

(Sold)

Kyrgyzstanite

Formation: (xx)
Location: Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion District Mines, Lavrion District, Attikí Prefecture, Greece
Size: KS 2

Landauite

Formation: rough
Location: Babuna Valley, Jakupica Mts, Nežilovo, Veles, Macedonia, The Former Yugoslav Republic of
Size: KS 2

(Sold)

Lanmuchangite

Formation: xx
Location: Roszdan, Kavadarci, Roszdan, Macedonia, The Former Yugoslav Republic of
Size: KS 2

Lanthanite-(Ce)

Formation: rough
Location: Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden
Size: KS 2

Lanthanite-(Ce)

Formation: (xx)
Location: Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden
Size: KS 4

Lasalite

Formation: (xx)
Location: Vanadium Queen Mine, La Sal Creek Canyon, San Juan Co., Utah, United States
Size: micro-mount

Lasalite

Formation: (xx)
Location: Vanadium Queen Mine, La Sal Creek Canyon, San Juan Co., Utah, United States
Size: micro-mount

Leonardsenite

Formation: rough
Location: Valley of Ten Thousand Smokes, Dillingham Borough, Alaska, United States
Size: micro-mount

(Sold)

Lindackerite

Formation: xx
Location: Fenugu Sibiri Mine, Gonnosfanadiga, Medio Campidano Province, Sardinia, Italy
Size: KS 2

Lindackerite

Formation: xx
Location: Fenugu Sibiri Mine, Gonnosfanadiga, Medio Campidano Province, Sardinia, Italy
Size: KS 2

Lombardoite

Formation: rough
Location: Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Size: KS 2
(Type locality)

Lombardoite

Formation: rough
Location: Valletta Mine, Vallone della Valletta, Canosio, Maira Valley, Cuneo Province, Piedmont, Italy
Size: micro-mount
(Type locality)

Magnesiokoritnigite

Formation: xx
Location: Torrecillas Mine, Iquique, Atacama, Chile
Size: KS 4
(Type locality)

Magnesiokoritnigite

Formation: xx
Location: Torrecillas Mine, Iquique, Atacama, Chile
Size: KS 2
(Type locality)

Magnesiostaurolite

Formation: (xx)
Location: Pratolungo, Isasca valley, Venasca, Varaita Valley, Cuneo Province, Piedmont, Italy
Size: micro-mount

Magnesiostaurolite

Formation: (xx)
Location: Pratolungo, Isasca valley, Venasca, Varaita Valley, Cuneo Province, Piedmont, Italy
Size: KS 2

Mahnertite

Formation: xx
Location: Fenugu Sibiri Mine, Gonnosfanadiga, Medio Campidano Province, Sardinia, Italy
Size: KS 2

Mahnertite

Formation: xx
Location: Fenugu Sibiri Mine, Gonnosfanadiga, Medio Campidano Province, Sardinia, Italy
Size: KS 2

(Sold)

Manganberzeliite

Formation: (xx)
Location: Langban, Värmland, Sweden
Size: KS 4
(Type locality)

Mangani-Obertiite

Formation: xx
Location: Caspar Quarry, Bellerberg, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Size: micro-mount
(Type locality)

(Sold)

Mangani-Obertiite

Formation: xx
Location: Caspar Quarry, Bellerberg, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Size: micro-mount
(Type locality)

(Sold)

Manganite

Formation: xx
Location: Kvivikdalen, Kristiansand, Vest-Agder, Norway
Size: KS 2

Manganite

Formation: xx
Location: Kvivikdalen, Kristiansand, Vest-Agder, Norway
Size: KS 2

Mangano-ferri-eckermannite

Formation: (xx)
Location: Tanohata mine, Tanohata-mura, Shimohei-gun, Iwate, Japan
Size: micro-mount
(Type locality)

Mansfieldite

Formation: rough
Location: Jote Mine, Pampa Larga, Atacama, Chile
Size: KS 2

Margarosanite

Formation: (xx)
Location: Langban, Värmland, Sweden
Size: KS 4

Marrucciite

Formation: (xx)
Location: Buca della Vena Mine, Ponte Stazzemese, Stazzema, Lucca Province, Tuscany, Italy
Size: KS 2
(Type locality)

(Sold)

Maxwellite

Formation: xx
Location: Squaw Creek Mine, Black Range, new Mexiko, United States
Size: KS 2
(Type locality)

Mejillonesite

Formation: xx
Location: Cerro Mejillones, Mejillones peninsula, Mejillones, Antofagasta Province, Antofagasta Region, Chile
Size: micro-mount
(Type locality)

(Sold)

Mendigite

Formation: xx
Location: In den Dellen quarries, Niedermendig, Mendig, Rhineland-Palatinate, Germany
Size: KS 2
(Type locality)

(Sold)

Mendigite

Formation: xx
Location: In den Dellen quarries, Niedermendig, Mendig, Rhineland-Palatinate, Germany
Size: KS 2
(Type locality)

Metavoltine

Formation: (xx)
Location: La Compania Mine, Sierra Gorda, Atacama, Chile
Size: KS 4