Fujioka city

Onara

Sanbagawa, Fujioka city, Gunma pref.

• Aragonite

  White, Needle

• Hydromagnesite

  White, Radial

• Brucite

  White, Platy

• Clinothulite

  Pink, Prismatic

• Sursassite

  Red, Prismatic

• Serpentine

  Transparent, Green

• Magnetite

  Black, Granular

Tsukiyoshi

Sanbagawa, Fujioka city, Gunma pref.

• Piemontite

  Red, Prismatic

• Ardennite-(As)

  Orange, Prismatic

• Spessartine

  Yellow, Dodecahedral

• Malachite

  Green, Prismatic

• Braunite

  Black, Granular

Tano Mine

Sanbagawa, Fujioka city, Gunma pref.

• Magnetite

  Black, Granular

• Polydymite

  Gray, Granular

• Millerite

  Yellow, Crust

• Diopside

  Pale green, Prismatic

• Tremolite

  White, Fibrous

• Antigorite

  Green, Prismatic

• Brucite

  Silver white, Micaceous

• Hydrotalcite

  White, Micaceous

• Dypingite

  White, Botryoidal

• Aragonite

  White, Crust

• Clinochlore

  Green, Micaceous

• Grossular

  Brown, Granular

• Unspecified mineral

  Reddish brown, Micaceous

Yashio Mine

Onishi, Fujioka city, Gunma pref.

• Aragonite

  White, Acicular/Tabular

• Hydromagnesite

  White, Radial

• Chromite

  Black, Granular

• Kämmererite(Kammererite)

  Purple

• Coalingite?

  Brown, Micaceous

• Albite

  White, Tabular

Tatarazawa

Shimo-Hino, Fujioka city, Gunma pref.

• Dawsonite

  White, Acicular

• Alumohydrocalcite

  White to pink, Acicular

• Dolomite

  White

• Magnesite

  White

• Siderite

  Brown, Granular

• Chalcedony

  White

Kanna city

Manba Mine

Takashio, Funako, Kanna city, Tano county, Gunma pref.

• Rhodonite

  Pink, Tabular

• Rhodochrosite

  Pale pink, Massive

• Caryopilite

  Brown, Massive

• Quartz

  Clear, Hexagonal prismatic

• Baryte

  White, Massive

• Hausmannite

  Brown, Massive

• Tephroite

  Bluish gray, Massive

• Alleghanyite

  Purplish brown, Massive

• Pyrite

  Yellow, Cubic

• Chalcopyrite

  Yellow, Tetragonal

• Bornite

  Blue, Massive

Shiozawa Mine

Shiozawa, Kanna city, Tano county, Gunma pref.

• Rhodochrosite

  Pale pink, Massive

• Caryopilite

  Brown, Massive

• Quartz

  Clear, Hexagonal prismatic

• Baryte

  White, Massive

• Hausmannite

  Brown, Massive

• Jacobsite

  Black, Massive

• Tephroite

  Bluish gray, Massive

• Pyrite

  Yellow, Cubic

• Chalcopyrite

  Yellow, Tetragonal

• Covellite

  Blue, Coating

• Alabandite

  Black, Granular

• Gageite

  Pale brown, Fibrous

Kiryu city

Choshichiro Peak, Mount Akagi

Shimo-Tazawa, Kurohone village, Kiryu city, Gunma pref.

• Osumilite-(Mg)

  Dark blue, Granular

Tsukuhara Mine

Umeda village, Kiryu city, Gunma pref.

• Ferberite

  Black, Tabular

• Pyrite

  Yellow, Cubic

• Arsenopyrite

  Silver white, Granular

• Tennantite

  Black, Massive

• Fluorite

  Purple, Massive

• Muscovite

  White, Tabular

• Heulandite

  White, Hexagonal tabular

• Quartz

  White, Prismatic

• Jarosite

  Brown, Granular

• Hydrokenoelsmoreite

  Yellow, Coating

• Scorodite

  Pale green, Granular

• Undetermined species

  Brown, Massive

Daikei Mine

Umeda village, Kiryu city, Gunma pref.

• Rhodonite

  Pink, Massive

• Tephroite

  Green, Massive

• Jacobsite

  Black

• Alleghanyite

  Brownish purple, Massive

• Sonolite

  Brownish purple, Massive

• Hausmannite

  Brown, Massive

• Manganosite

  Green, Massive

• Braunite

  Black, Massive

• Pyrite

  Yellow, Granular

• Bornite?

  Rainbow, Granular

• Rhodochrosite

  White, Massive

• Rhodochrosite?

  Green, Veinlet

• Spessartine

  Reddish brown, Banded

• Cryptomelane

  Black, Massive

• Neotocite

  Brown, Veinlet

• Undetermined species

  Black, Veinlet

Mogurazawa Mine

Kamibishi, Hishi village, Kiryu city, Gunma pref.

• Rhodochrosite

  Pink

• Rhodonite

  Pink/Purple

• Roscoelite

  Green, Tabular

• Suzukiite

  Green, Prismatic

• Nagashimalite?

  Greenish-black

• Hausmannite

  Brown

• Tephroite

  Green

• Pyrite

  Yellow, Cubic

• Pyrrhotite

  Yellow

• Tetrahedrite

  Yellow, Tetragonal

• Pyrochroite

  Brown

Kurokawa Mine

Kurokawa, Hishi village, Kiryu city, Gunma pref.

• Hausmannite

  Brown

• Manganosite

  Green

• Jacobsite

  Black

• Rhodonite

  Pink

• Neotocite

  Brown

• Sulphur

  Yellow, Coating

• Millerite

  Yellow, Acicular

Midori city

Hagidaira Mine

Konaka, Azuma village, Midori city, Gunma pref.

• Cosalite

  Black, Prismatic

• Pyrophanite

  Brown, Tabular

• Alabandite

  Black

• Spessartine

  Brown, Granular

• Rhodonite

  Pink, Tabular

• Hübnerite(Hubnerite)

  Brown, Prismatic

• Sphalerite

  Brown

• Opal

  Rainbow color, Massive

Kurozakaishi river

Sori, Azuma village, Midori city, Gunma pref.

• Cordierite

  Pale blue, Prismatic

Ote

Sori, Azuma village, Midori city, Gunma pref.

• Allanite-(Ce)

  Black, Prismatic

• Hornblende

  Black, Prismatic

• Plagioclase

  White, Massive

Kusagi

Kusagi, Azuma village, Midori city, Gunma pref.

• Allanite-(Ce)

  Black, Prismatic

• Pyrrhotite

  Yellow, Hexagonal platy

• Calcite

  White, Granular

Annaka city

Akima River

Nishikami-Akima, Annaka city, Gunma pref.

• Augite

  Black, Prismatic

Shimonita city

Nishinomaki Mine

Minami-Nomaki, Shimonita city, Kanra county, Gunma pref.

• Stibnite

  Gray, Prismatic

• Realgar

  Red, Tabular

• Wakabayashilite

  Yellow, Needle

• Orpiment

  Yellow, Platy/Radial

Nakamaru Mine

Minami-Nomaki, Shimonita city, Kanra county, Gunma pref.

• Stibnite

  Gray, Prismatic

• Hydroxystibioroméite (Hydroxystibioromeite)

  Yellow, Prismatic

• Sphalerite

  Yellow/Black

• Kermesite?

  Red

• Pyrite

  Yellow

• Tetrahedrite

  Black

• Galena

  Gray

• Anglesite

  White

• Baryte

  White, Tabular

• Stilbite

  White, Prismatic

Dohira River

Minami-Nomaki, Shimonita city, Kanra county, Gunma pref.

• Wairakite

  White, Tetracosahedron

• Calcite

  White, Scalenohedral

Naka-Osaka Mine

Naka-Osaka, Shimonita city, Kanra county, Gunma pref.

• Magnetite

  Black, Massive

• Pyrite

  Yellow, Massive

• Chalcopyrite

  Yellow, Massive

• Sphalerite

  Black Granular

• Lepidocrocite

  Rainbow, Crust

• Calcite

  White, Veinlet

• Ankerite

  Pale brown, Vein

• Actinolite

  Green, Fibrous

Mayama

Mayama, Shimonita city, Kanra county, Gunma pref.

• Serpentine

  Green, Veinlet

• Iron

  Silver, Globular

• Awaruite

  Silver, Globular

• Magnetite

  Black, Granular

Mount Inafukumi

Kuriyama, Shimonita city, Kanra county, Gunma pref.

• Jadeite

  White, Massive

• Ferro-taramite

  Dark green, Prismatic

• Ferritaramite

  Dark green, Prismatic

• Albite

  White, Prismatic

• Almandine

  Reddish-brown, Massive

• Calcite

  White, Massive

• Aragonite

  White, Prismatic

Nanmoku city

Omizu Mine

Mukuruma, Nanmoku city, Kanra county, Gunma pref.

• Stibnite

  Gray, Prismatic

• Hydroxystibioroméite (Hydroxystibioromeite)

  Yellow, Crust

• Sénarmontite (Senarmontite)

  Colorless, Octahedral

• Pyrite

  Yellow, Granular

• Quartz

  Colorless, Granular

• Dolomite

  White, Massive

Tozawa Mine

Tozawa, Nanmoku city, Kanra county, Gunma pref.

• Quartz

  White, Massive

Tsumagoi city

Ishizu Mine

Imai, Tsumagoi city, Agatsuma county, Gunma pref.

• Sulphur

  Yellow, Massive

Joshin Mine

Hoshimata, Tsumagoi city, Agatsuma county, Gunma pref.

• Halloysite-10Å

  Brown, Massive

Sessho creek

Hoshimata, Tsumagoi city, Agatsuma county, Gunma pref.

• Minamiite

  Clear, Hexagonal tabular

• Huangite

  Clear, Hexagonal tabular

• Alunite

  Clear, Hexagonal tabular

• Natroalunite

  Clear, Hexagonal tabular

• Sulphur

  Yellow, Massive

• Pyrite

  Brass, Cubic

• Crandallite

  Fine crystals

• Woodhouseite

  Fine crystals

Manza-Karafuki

Hoshimata, Tsumagoi city, Agatsuma county, Gunma pref.

• Sulphur

  Yellow, Massive

Nakanojo city

Gunma Mine

Iriyama, Nakanojo city, Agatsuma county, Gunma pref.

• Goethite

  Black, Replacing plants

• Limonite

  Brown, Massive

• Jarosite

  Yellow, Massive

• Schwertmannite

  Rainbow, Coating

Shima Mine

Shima, Nakanojo city, Agatsuma county, Gunma pref.

• Pyrophyllite

  White, Radial

• Magnesiofoitite

  Gray/Blue, Fibrous

• Corundum

  Pale brown, Granular

• Diaspore

  Clear, Acicular

• Andalusite

  Colorless, Prismatic

• Cordierite

  Pale blue, Granular

Hinatami

Shima, Nakanojo city, Agatsuma county, Gunma pref.

• Pyrophyllite

  White, Radial

• Rutile

  Red, Granular

• Titanite

  Brown, Granular

• Pyrite

  Yellow, Granular

• Hematite

  Black, Tabular

• Dumortierite

  Pale blue, Massive

Tange Hot Spring

Kami-Sawatari, Nakanojo city, Agatsuma county, Gunma pref.

• Quartz

  White, Vein

• Pyrite

  Yellow, Fine grains

Kusatsu city

Yugama

Mount Kusatsu-Shirane, Kusatsu city, Agatsuma county, Gunma pref.

• Sulphur

  Yellow, Melted

Shirane Mine

Maeguchi, Kusatsu city, Agatsuma county, Gunma pref.

• Sulphur

  Yellow, Massive

• Limonite

  Reddish brown, Earthy

Higashi-Agatsuma city

Midosawa Mine

Matsuya, Higashi-Agatsuma city, Agatsuma county, Gunma pref.

• Sericite

  White, Massive

• Pyrite

  Yellow, Octahedral

• Marcasite

  Silver white, Crust

• Siderite

  Brown, Grobular

Shibukawa city

Futatsu-dake Peak, Mount Haruna

Ikaho, Ikaho village, Shibukawa city, Gunma pref.

• Hypersthene

  Dark brown, Prismatic

• Hornblende

  Black, Prismatic

• Anorthite

  White, Orthogonal

• beta-Quartz

  White, Granular

Momiji bridge

Ikaho, Ikaho village, Shibukawa city, Gunma pref.

• Hypersthene

  Dark brown, Granular

• Hornblende

  Black, Prismatic

• Anorthite

  White, Orthogonal

Maebashi city

Jigoku valley

Akagisan, Fujimi village, Maebashi city, Gunma pref.

• Sulphur

  Yellow, Coating

• Siliceous sinter

  White, Encrusted

• Limonite

  Brown, Encrusted

Ogo

Ogo village, Maebashi city, Gunma pref.

• Magnesiohornblende

  Black, Prismatic

• Hypersthene

  Dark brown, Prismatic

• Anorthite

  White, Orthogonal

Minakami city

Mount Tanigawa

Yubiso, Minakami city, Tone county, Gunma pref.

• Anthophyllite

  Grayish-green, Fibrous

• Chrysotile

  Yellow, Fibrous

• Magnetite

  Black, Granular

Fujiwara Dam

Fujiwara, Minakami city, Tone county, Gunma pref.

• Clinochlore

  Green, Amygdaloidal

• Opal

  Pale brown, Amygdaloidal

Minakami Mine

Tanigawa, Minakami city, Tone county, Gunma pref.

• Sphalerite

  Brown, Massive

• Pyrite

  Yellow, Cubic

• Galena

  Dark gray, Massive

• Baryte

  White, Tabular

• Quartz

  Clear, Prismatic

Ohinata Mine

Obinata, Minakami city, Tone county, Gunma pref.

• Sphalerite

  Brown, Massive

• Pyrite

  Yellow, Cubic

• Chalcopyrite

  Yellow, Massive

• Galena

  Dark gray, Massive

• Brianyoungite

  White, Crust

• Aurichalcite

  Pale blue, Crust

• Azurite

  Blue, Tabular

• Brochantite

  Green, Tabular

• Chrysocolla

  Green, Crust

• Calcite

  White, Massive

Amanuma Mine

Namezawa, Minakami city, Tone county, Gunma pref.

• Gold-bearing quartz

  White, Network

• Pyrite

  Yellow, Granular

• Calcite

  White, Massive

Daido Mine

Iri-Sukawa, Minakami city, Tone county, Gunma pref.

• Magnetite

  Black, Granular

• Hematite

  Red, Earthy

• Zircon

  Pink, Transparent

Mount Kawate

Iri-Sukawa, Minakami city, Tone county, Gunma pref.

• Zunyite

  White, Tetrahedral

• Limonite

  Brown, Massive

• Diaspore

  White, Massive

Kawaba city

Kawaba Mine

Yachi, Kawaba city, Tone county, Gunma pref.

• Andradite

  Brown, Tetracosahedron

• Calcite

  White, Granular

• Quartz

  Clear, Prismatic

• Ferro-ferri-hornblende

  Green, Thin prismatic

• Epidote

  Green, Prismatic

Numata city

Fukiware Fall

Okkai, Tone village, Numata city, Gunma pref.

• Calcite

  White, Massive

• Epidote

  Pale green, Prismatic

• Chlorite

  Dark green, Micaceous

• Pyrite

  Yellow, Cubic

• Thulilte(?)

  Pink, Massive

Akagine Mine

Kakidaira, Tone village, Numata city, Gunma pref.

• Chalcopyrite

  Yellow, Massive

• Sphalerite

  Dark brown, Massive

• Galena

  Dark gray, Massive

• Calcite

  White, Massive

• Fluorite

  Colorless, Massive

• Stilbite

  White, Platy

• Epidote

  Green, Massive

• Azurite

  Blue, Prismatic

• Chrysocolla

  Blue, Massive

• Aurichalcite

  Pale blue, Crust

Tokami Mine

Tokami, Numata city, Gunma pref.

• Galena

  Black, Massive

• Chalcopyrite

  Yellow, Massive

• Pyrite

  Yellow, Granular

• Sphalerite

  Dark brown, Granular

• Chlorite

  Green, Earthy

• Pyromorphite

  Greenish-yellow, Hexagonal prismatic

• Amethyst

  Pale purple, Massive

Kazusaka Pass

Numata city, Gunma pref.

• Ferrohornblende

  Dark green, Prismatic

• Quartz

  Colorless, Prismatic

• Thulite

  Pink, Massive

Shirasawa Mine

Takahira, Shirasawa village, Numata city, Gunma pref.

• Magnetite

  Black, Octagonal

• Sphalerite

  Black, Massive

• Pyrrhotite

  Yellow, Massive

• Chalcopyrite

  Yellow, Massive

• Pyrite

  Yellow, Cubic

• Molybdenite

  Gray, Platy

• Hedenbergite

  Grayish green, Prismatic

• Ferro-hornblende

  Green, Granular

• Bustamite

  Pale pink, Fibrous

• Andradite

  Brown, Dodecahedral

• Stilpnomelane

  Black, Micaceous

• Axinite

  Colorless-Pale green, Tabular

• Fluorite

  Colorless, Massive

• Cassiterite

  Pale brown, Prismatic

• Scheelite

  Pale yellow, Octagonal

• Gypsum

  Colorless, Prismatic

Katashina city

Nebasawa Mine

Tokura, Katashina city, Tone county, Gunma pref.

• Gold ore

  Black

• Pyrite

  Yellow, Radial

• Pyrargyrite/Proustite

  Red, Coating

• Miargyrite

  Black, Massive

• Variscite

  Pale blue, Spherical

• Calcite

  Pale brown, Massive

Tokura

Tokura, Katashina city, Tone county, Gunma pref.

• Wairakite

  White, Massive

• Dmisteinbergite

  White, Micaceous

• Epidote

  Green, Prismatic

• Thulite?

  Pale red, Massive

• Amphibole

  Black, Prismatic

• Rutile

  Dark red, Prismatic

Tsuchiide

Tsuchiide, Katashina city, Tone county, Gunma pref.

• Muscovite

  White, Micaceous

• Schorl

  Black, Prismatic

• Almandine

  Brown, Massive