Todorokite
Todorokite is a hydrated sodium calcium potassium manganese magnesium oxide and a member of the Crytomelane Group. It forms monoclinic, metallic, opaque, purple-gray, brown to black, reniform aggregates composed of minute lathlike crystals, flattened {010} and elongated [001]. Todorokite occurs as a secondary mineral in pegmatites, as alteration product of manganese minerals, and as an essential component of manganese nodules.It was named in 1934, by Toyofumi Yoshimura, for its discovery locality, the Todoroki Mine, Yoichi, Shiribeshi Province, Hokkaido, Japan. Other notable localities include: Newry and Greenwood, Oxford Co., Maine, USA; Tip Top mine (Tip Top pegmatite), Fourmile, near Custer, Custer Co., SD, USA; Palermo No.1 mine, Grafton Co., New Hampshire, USA; Sterling Hill, Sussex Co., New Jersey, USA; Several localities in Oriente prov., Cuba; Tachgagalt, Morocco; Smartt open pit, Kalahari Manganese Field, Northern Cape Prov., South Africa; Kalgoorlie and Pilbarra, Western Australia.Buy crystals and minerals online like rare todorokite specimens online at iRocks.com.
- CHESA-38
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 8.8 x 8.6 x 6.3 cm
- $950.00
- CHESA-20
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Miniature
- 5.3 x 4.6 x 4.0 cm
- $900.00
- CHESA-19
- Manganese Biominerals (Todorokite, Romanechite, Birnessite) Ps. After Arthropod Burrows
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 6.6 x 6.4 x 3.5 cm
- $750.00
- CHESA-18
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 6.6 x 4.9 x 2.8 cm
- $350.00
- CHESA-04
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 7.4 x 1.8 x 1.4 cm
- $400.00
- CHESA-01
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Cabinet
- 11.5 x 3.6 x 3.5 cm
- $1,250.00
- MD-146989
- Manjiroite, Todorokite, Calcite
- Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
- Small Cabinet
- 9.2 x 8.8 x 6.7 cm
- MD-174093
- Manjiroite, Todorokite, Calcite
- Smartt Mine, Kalahari manganese fields, Northern Cape Province, South Africa
- Cabinet
- 10.7 x 9.1 x 8.0 cm
- MD-217430
- Colemanite, Inyoite, Todorokite
- Corkscrew Mine, Corkscrew Canyon, Black Mts, Furnace Creek District (Furnace Creek Borate District), Death Valley National Park, Death Valley, Inyo Co., California, USA
- Small Cabinet
- 5.4 x 4.0 x 3.1 cm
- CH26
- Todorokite on Gypsum
- Rancho Penasquitos, San Diego County, California, USA
- Large Cabinet
- 16.9 x 12.0 x 8.0 cm
- MRZ290
- Todorokite
- Kent, Kazakhstan
- Miniature
- 4.7 x 3.9 x 2.4 cm
- CHESA-40
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Cabinet
- 13.0 x 12.6 x 7.8 cm
- CHESA-39
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Cabinet
- 15.6 x 8.3 x 5.5 cm
- CHESA-37
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Cabinet
- 11.6 x 7.8 x 5.7 cm
- CHESA-36
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Cabinet
- 9.8 x 8.7 x 3.1 cm
- CHESA-35
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 6.4 x 5.7 x 4.9 cm
- CHESA-34
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 9.2 x 7.8 x 3.6 cm
- CHESA-33
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Cabinet
- 13.5 x 11.5 x 3.7 cm
- CHESA-32
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 7.1 x 4.9 x 4.2 cm
- CHESA-31
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 8.5 x 7.0 x 3.5 cm
- CHESA-26
- Manganese Biominerals (Todorokite, Romanechite, Birnessite) Ps. After Arthropod Burrows
- Chesapeake Bay, Calvert County, Maryland, USA
- Small Cabinet
- 8.6 x 7.7 x 2.6 cm
- CHESA-27
- Manganese Biominerals (Todorokite, Romanechite, Birnessite) Ps. After Arthropod Burrows
- Chesapeake Bay, Calvert County, Maryland, USA
- Miniature
- 4.3 x 4.1 x 3.8 cm
- CHESA-28
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Thumbnail
- 2.5 x 2.0 x 0.9 cm
- CHESA-29
- Manganese Biominerals (Todorokite, Romanechite, Birnessite)
- Chesapeake Bay, Calvert County, Maryland, USA
- Miniature
- 4.0 x 2.5 x 1.2 cm