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

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

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

Lanmuchangite

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

(Sold)

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

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)

Lüneburgite

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

Magnesiokoritnigite

Formation: xx
Location: Torrecillas Mine, Salar Grande, Iquique Province, Tarapacá, Chile
Size: KS 4
(Type locality)

Magnesiokoritnigite

Formation: xx
Location: Torrecillas Mine, Salar Grande, Iquique Province, Tarapacá, Chile
Size: KS 2
(Type locality)

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

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: KS 2
(Type locality)

Manganipargasite

Formation: rough
Location: Langban, Värmland, Sweden
Size: micro-mount
(Type locality)

Manganipargasite

Formation: rough
Location: Langban, Värmland, Sweden
Size: micro-mount
(Type locality)

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

Marrite

Formation: xx
Location: Lengenbach Quarry, Fäld, Binn, Goms, Valais, Switzerland
Size: KS 2
(Type locality)

Maxwellite

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

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

Micheelsenite

Formation: xx
Location: Midtfjellet Quarry, Maleröd, Larvik, Norway
Size: KS 4

Micheelsenite

Formation: xx
Location: Midtfjellet Quarry, Maleröd, Larvik, Norway
Size: KS 4

Micheelsenite

Formation: xx
Location: Midtfjellet Quarry, Maleröd, Larvik, Norway
Size: KS 4

Micheelsenite

Formation: xx
Location: Midtfjellet Quarry, Maleröd, Larvik, Norway
Size: KS 4

Minasragrit

Formation: rough
Location: Ragra Mine, Huayllay District, Pasco Province, Pasco, Peru
Size: micro-mount
(Type locality)

Möhnite

Formation: (xx)
Location: Pabellon de Pica, Punta Colina, Iquique, Chile
Size: micro-mount
(Type locality)

Möhnite

Formation: (xx)
Location: Pabellon de Pica, Punta Colina, Iquique, Chile
Size: micro-mount
(Type locality)

Möhnite

Formation: (xx)
Location: Pabellon de Pica, Punta Colina, Iquique, Chile
Size: micro-mount
(Type locality)

Molinelloite

Formation: (xx)
Location: Molinello Mine, Graveglia Valley, Ne, Genova Province, Liguria, Italy
Size: micro-mount
(Type locality)

Molybdite

Formation: (xx)
Location: Lindas, Alseda, Smaland, Sweden
Size: KS 4

Molybdite

Formation: (xx)
Location: Lindas, Alseda, Smaland, Sweden
Size: KS 2

Murdochite

Formation: xx
Location: La Compania Mine, Sierra Gorda, Atacama, Chile
Size: KS 2

Murdochite

Formation: xx
Location: La Compania Mine, Sierra Gorda, Atacama, Chile
Size: KS 2

Murdochite

Formation: xx
Location: La Compania Mine, Sierra Gorda, Atacama, Chile
Size: KS 2

Olshanskyite

Formation: rough
Location: Fuka Mine, Bicchu-cho (Bitchu-cho), Takahashi City, Okayama Prefecture, Chugoku Region, Honshu Island, Japan
Size: micro-mount