Todorokite
Todorokite is a rare complex hydrous manganese oxide mineral with the formula (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O. It was named in 1934 for the type locality, the Todoroki mine, Hokkaido, Japan. It belongs to the prismatic class 2/m of the monoclinic crystal system, but the angle β between the a and c axes is close to 90°, making it seem orthorhombic. It is a brown to black mineral which occurs in massive or tuberose forms. It is quite soft with a Mohs hardness of 1.5, and a specific gravity of 3.49 - 3.82. It is a component of deep ocean basin manganese nodules.
primaryTopic
Todorokite
Todorokite is a rare complex hydrous manganese oxide mineral with the formula (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O. It was named in 1934 for the type locality, the Todoroki mine, Hokkaido, Japan. It belongs to the prismatic class 2/m of the monoclinic crystal system, but the angle β between the a and c axes is close to 90°, making it seem orthorhombic. It is a brown to black mineral which occurs in massive or tuberose forms. It is quite soft with a Mohs hardness of 1.5, and a specific gravity of 3.49 - 3.82. It is a component of deep ocean basin manganese nodules.
has abstract
La todorokita es un mineral de ...... así por el nombre de la mina.
@es
La todorokita és un mineral de ...... ormes fibroses amb pirolusita.
@ca
La todorokite è un minerale appartenente al gruppo della coronadite.
@it
Todorokita oxido motako minerala da.
@eu
Todorokite is a rare complex h ...... ocean basin manganese nodules.
@en
Тодорокит — минерал, М2+Mn43+O ...... Хоккайдо, Япония) в 1934 году.
@ru
Тодорокіт (рос. тодорокит; анг ...... , 1934). Синоніми: делатореїт.
@uk
轟石(とどろきせき、とどろきいし、Todorokite)とは ...... され、独立種として承認された鉱物としては最も古い歴史を持つ。
@ja
Wikipage page ID
page length (characters) of wiki page
Wikipage revision ID
1,020,838,971
Link from a Wikipage to another Wikipage
birefringence
nearly 0.02
@en
boxwidth
caption
Todorokite with manjioite and ...... Kuruman District, South Africa
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category
Manganese minerals
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class
Prismatic
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cleavage
Perfect on {100} and {010}
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color
Dark brown or brownish black, brown in transmitted light
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dana
diaphaneity
Opaque, transparent in very thin slivers
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fusibility
Does not fuse
@en
gravity
habit
Aggregates of minute lathlike crystals
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luster
Metallic to dull, silky in aggregates
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molweight
name
Todorokite
@en
opticalprop
Biaxial
@en
pleochroism
X = dark brown, Z = yellowish brown
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refractive
Greater than 1.74
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solubility
Soluble in acids
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streak
Black or dark brown
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strunz
(4/D.09-10 )
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symmetry
P2/m
@en
system
Monoclinic
@en
twinning
Contact twins are common
@en
wikiPageUsesTemplate
subject
hypernym
comment
La todorokita es un mineral de ...... así por el nombre de la mina.
@es
La todorokita és un mineral de ...... ormes fibroses amb pirolusita.
@ca
La todorokite è un minerale appartenente al gruppo della coronadite.
@it
Todorokita oxido motako minerala da.
@eu
Todorokite is a rare complex h ...... ocean basin manganese nodules.
@en
Тодорокит — минерал, М2+Mn43+O ...... Хоккайдо, Япония) в 1934 году.
@ru
Тодорокіт (рос. тодорокит; анг ...... , 1934). Синоніми: делатореїт.
@uk
轟石(とどろきせき、とどろきいし、Todorokite)とは ...... され、独立種として承認された鉱物としては最も古い歴史を持つ。
@ja
label
Todorokita
@ca
Todorokita
@es
Todorokita
@eu
Todorokite
@en
Todorokite
@it
Тодорокит
@ru
Тодорокіт
@uk
轟石
@ja
wasDerivedFrom
isPrimaryTopicOf
name
Todorokite
@en