Citation:

JFSHIUS4GM2_289.pdf

Name: (Page 290) Composition of a manganese deposit sample from the Todoroki Mine, Japan
Creator: T Yoshimura
Published: 1934
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The Todoroki Mine is situated about 25 kilometers to the south-east of Ginzan railway station in Siribesi Province, Hokkaido. The author analysed an interesting specimen of black manganese-ore which had a fractured surface which looked like that of a broken piece of wood. This new manganese mineral was studied in its form, physical properties and chemical composition. The author later named this mineral form as "todorokite".

Source:

Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT

Further details:

Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

Project(s):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Latitude: 43.011030 * Longitude: 140.885502

Minimum Elevation: 311.0 m * Maximum Elevation: 311.0 m

Event(s):

Todoroki_Y * Latitude: 43.011030 * Longitude: 140.885502 * Elevation: 311.0 m * Location: Japan

Comment:

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample ID	Sample ID		Yoshimura, T
2	Potassium oxide	K2O	%	Yoshimura, T	Wet chemistry
3	Sodium oxide	Na2O	%	Yoshimura, T	Wet chemistry
4	Magnesium oxide	MgO	%	Yoshimura, T	Wet chemistry
5	Calcium oxide	CaO	%	Yoshimura, T	Wet chemistry
6	Barium oxide	BaO	%	Yoshimura, T	Wet chemistry
7	Aluminium oxide	Al2O3	%	Yoshimura, T	Wet chemistry
8	Iron oxide, Fe2O3	Fe2O3	%	Yoshimura, T	Wet chemistry
9	Manganese oxide	MnO	%	Yoshimura, T	Wet chemistry
10	Oxygen	O	%	Yoshimura, T	Wet chemistry
11	Water in rock	H2O	%	Yoshimura, T	Wet chemistry	H2O+, structural part, similar to LOI
12	Water in rock	H2O	%	Yoshimura, T	Wet chemistry	H2O-
13	Silicon dioxide	SiO2	%	Yoshimura, T	Wet chemistry
14	Phosphorus pentoxide	P2O5	%	Yoshimura, T	Wet chemistry
15	Sulfur trioxide	SO3	%	Yoshimura, T	Wet chemistry
16	Insoluble residue	Insol res	%	Yoshimura, T	Wet chemistry
17	Loss on ignition	LOI	%	Yoshimura, T		at 120°C
18	Loss on ignition	LOI	%	Yoshimura, T		at 850°C
19	Deposit type	Deposit type		Yoshimura, T
20	Description	Description		Yoshimura, T

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

20 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Sample ID	2 K2O [%]	3 Na2O [%]	4 MgO [%]	5 CaO [%]	6 BaO [%]	7 Al2O3 [%]	8 Fe2O3 [%]	9 MnO [%]	10 O [%]	11 H2O [%] (H2O+, structural part, simila...)	12 H2O [%] (H2O-)	13 SiO2 [%]	14 P2O5 [%]	15 SO3 [%]	16 Insol res [%]	17 LOI [%] (at 120°C)	18 LOI [%] (at 850°C)	19 Deposit type	20 Description
Todoroki_Y-1Y	0.54	0.21	3.01	3.28	2.05	0.28	0.2	65.89	12.07	9.72	1.56	0.45	0.42	0.28	1.28	1.56	15.77	Mn crust	The sample looks like a broken piece of wood. Layers, about 0.1-3 cm each in thickness, show a reniform surface because of their zonal development. Flakes aggregate so loosely that the mass looks like a sponge.