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Iseite

A valid IMA mineral species

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Iseite

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite, etc.

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite, etc.

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Iseite

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

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About IseiteHide

Ise City, Honshu Island, Kinki region, Mie Prefecture, Japan

Ise City, Mie Prefecture, Japan

Formula:

Mn₂Mo₃O₈

Colour:

Black

Lustre:

Sub-Metallic

Hardness:

4 - 5

Specific Gravity:

5.85 (Calculated)

Crystal System:

Hexagonal

Member of:

Kamiokite Group > Nolanite Supergroup

Name:

Named by Nishio-Hamane Daisuke, Tomita Norimitsu, Minakawa Tetsuo, and Inaba Sachio in 2012 for Ise City, Honshu Island, Kinki region, Mie Prefecture, Japan where the type locality is located.

Type Locality:

ⓘ Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Isostructural with:

Kamiokite

Black, sub-metallic, small grains (<20 microns) in 1 mm granular aggregates. The manganese analogue of kamiokite and majindeite.

Unique IdentifiersHide

Mindat ID:

42884

Long-form identifier:

mindat:1:1:42884:0

Similar NamesHide

Iozite	A synonym of Wüstite
Iserite (of Dana)	A synonym of 'Iserine'
Iserite (of Janovsky)	A variety of Rutile	near FeTi₂O₅
Viséite	A variety of Crandallite

IMA Classification of IseiteHide

IMA status:

Approved

IMA Formula:

Mn²⁺₂Mo⁴⁺₃O₈

Approval year:

2012

First published:

2013

Type description reference:

Nishio-Hamane, Daisuke, Tomita, Norimitsu, Minakawa, Tetsuo, Inaba, Sachio (2013) Iseite, Mn₂Mo₃O₈, a new mineral from Ise, Mie Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 108 (1) 37-41 doi:10.2465/jmps.120621c

Classification of IseiteHide

Strunz-mindat (2026):

4.CB.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations

Dana 8th ed.:

7.6.3.2

7 : MULTIPLE OXIDES
6 : (AB)₅X₈

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference for Standard
Is	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of IseiteHide

Lustre:

Sub-Metallic

Transparency:

Opaque

Colour:

Black

Comment:

Light yellow gray in transmitted light

Streak:

Black

Hardness:

4 - 5 on Mohs scale

Tenacity:

Brittle

Density:

5.85 g/cm³ (Calculated)

Optical Data of IseiteHide

Anisotropism:

Medium to strong, gray to pale gray

Reflectivity:

Wavelength	R₁ (%)	R₂ (%)
400nm	19.6%	16.0%
420nm	19.8%	16.2%
440nm	20.7%	16.6%
460nm	20.3%	16.6%
470nm	20.4%	16.8%
480nm	20.4%	16.8%
500nm	20.5%	16.9%
520nm	20.7%	17.1%
540nm	20.4%	17.1%
546nm	20.4%	17.1%
560nm	20.2%	17.1%
580nm	20.1%	17.2%
589nm	20.1%	16.9%
600nm	20.1%	16.8%
620nm	19.7%	16.8%
640nm	19.9%	17.0%
650nm	19.9%	16.9%
660nm	19.6%	17.0%
680nm	20.2%	17.0%
700nm	19.5%	17.0%

Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 20.7%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

light yellowish gray

Internal Reflections:

None

Pleochroism:

Visible

Comments:

Pale grey to yellowish grey

Chemistry of IseiteHide

Mindat Formula:

Mn₂Mo₃O₈

Element Weights:

Element	% weight
Mo	54.756 %
O	24.345 %
Mn	20.899 %

Calculated from ideal end-member formula.

Elements listed:

Mn, Mo, O - search for minerals with similar chemistry

Crystallography of IseiteHide

Crystal System:

Hexagonal

Class (H-M):

6mm - Dihexagonal Pyramidal

Space Group:

P6₃mc

Cell Parameters:

a = 5.8052(3) Å

Unit Cell V:

0.00 Å³ (Calculated from Unit Cell)

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0020450	Iseite	Nishio-Hamane D, Tomita N, Minakawa T, Inaba S (2013) Iseite, Mn2Mo3O8, a new mineral from Ise, Mie Prefecture, Japan Journal of Mineralogical and Petrological Sciences 108 37-41		2013	Shobu area, Ise City, Mie Prefecture, Japan	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Iseite'
loop_
_publ_author_name
'Nishio-Hamane D'
'Tomita N'
'Minakawa T'
'Inaba S'
_journal_name_full 'Journal of Mineralogical and Petrological Sciences'
_journal_volume 108 
_journal_year 2013
_journal_page_first 37
_journal_page_last 41
_publ_section_title
;
 Iseite, Mn2Mo3O8, a new mineral from Ise, Mie Prefecture, Japan
;
_database_code_amcsd 0020450
_chemical_compound_source 'Shobu area, Ise City, Mie Prefecture, Japan'
_chemical_formula_sum '(Mn1.8 Fe.2) Mo3 O8'
_cell_length_a 5.8052
_cell_length_b 5.8052
_cell_length_c 10.2277
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 298.499
_exptl_crystal_density_diffrn      5.851
_symmetry_space_group_name_H-M 'P 63 m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Mn1   0.33333   0.66667   0.95470   0.90000
Fe2   0.33333   0.66667   0.95470   0.10000
Mn3   0.33333   0.66667   0.52030   0.90000
Fe4   0.33333   0.66667   0.52030   0.10000
Mo1   0.14630  -0.14630   0.25000   1.00000
O1   0.00000   0.00000   0.40000   1.00000
O2   0.33333   0.66667   0.14200   1.00000
O3   0.47900  -0.47900   0.37100   1.00000
O4   0.16300  -0.16300   0.64000   1.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
5.114 Å	(68)
5.027 Å	(18)
4.511 Å	(25)
3.585 Å	(98)
2.903 Å	(2)
2.823 Å	(35)
2.554 Å	(15)
2.523 Å	(100)
2.441 Å	(90)
2.279 Å	(5)
2.256 Å	(25)
2.023 Å	(50)
1.919 Å	(2)
1.900 Å	(8)
1.868 Å	(17)
1.792 Å	(27)
1.705 Å	(3)
1.659 Å	(44)
1.654 Å	(24)
1.615 Å	(7)
1.593 Å	(35)
1.588 Å	(2)
1.525 Å	(5)
1.504 Å	(8)
1.470 Å	(4)
1.451 Å	(25)
1.411 Å	(6)
1.403 Å	(9)
1.396 Å	(11)
1.345 Å	(6)
1.296 Å	(5)
1.291 Å	(3)
1.279 Å	(3)
1.262 Å	(16)
1.257 Å	(6)
1.247 Å	(7)
1.239 Å	(2)
1.224 Å	(1)
1.221 Å	(2)
1.195 Å	(3)

Locality:

Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

Reference:

Comments:

Author's data

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-? alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Type Occurrence of IseiteHide

Type Locality:

ⓘ Shobu manganese deposit, Shobu, Ise City, Mie Prefecture, Japan

General Appearance of Type Material:

Zoned aggregates (up to ~1 mm) of minute anhedral crystals of a several micrometers to 20 μm.

Place of Conservation of Type Material:

National Museum of Nature and Science, Tsukuba, Japan, specimen number NSMM-43652

Geological Setting of Type Material:

Manganese deposit.

Associated Minerals at Type Locality:

Allanite Group	Bementite	Caryopilite	Chalcopyrite	Heazlewoodite
Hematite	Magnetite	Molybdenite	Monazite-(La)	Pentlandite
Rhodochrosite	Tephroite

Reference:

Synonyms of IseiteHide

IMA2012-020

Other Language Names for IseiteHide

Dutch:Iseiet

German:Iseit

Japanese:伊勢鉱

Relationship of Iseite to other SpeciesHide

Member of:

Kamiokite Group > Nolanite Supergroup

Other Members of Kamiokite Group:

Kamiokite	Fe₂Mo₃O₈	Hex. 6mm : P6₃mc
Majindeite	Mg₂Mo₃O₈	Hex. 6mm : P6₃mc

Common AssociatesHide

Associations Based on Photo Data:

1 photo of Iseite associated with Rhodochrosite	MnCO₃
1 photo of Iseite associated with Hematite	Fe₂O₃
1 photo of Iseite associated with Magnetite	Fe²⁺Fe³⁺₂O₄

Related Minerals - Strunz-mindat Grouping Hide

4.CB.	Magnesiohögbomite-6N12S	Mg₅Al₁₁TiO₂₃(OH)	Trig. 3m(32/m) : R3m
4.CB.	Kidodite	BaMg₂Fe₁₆O₂₇	Hex. 6/mmm(6/m2/m2/m) : P6₃/mmc
4.CB.	Ferrohögbomite-2N2S	[(Fe²⁺,Mg,Zn,Al)₃(Al,Ti,Fe³⁺)₈O₁₅(OH)]₂	Hex. 6mm : P6₃mc
4.CB.	Zhenruite	(MoO₃)₂ · H₂O	Mon. 2/m : P2₁/m
4.CB.	Fuyuanite	Mg₇Nb₆O₁₈(OH)₈	Trig. 3 : P3
4.CB.	Virgilluethite	MoO₃ · H₂O	Mon. 2/m : P2₁/c
4.CB.	Pengite	(Pb₈Sb³⁺₃)_Σ11Sb⁵⁺₉O₃₅	Trig. 3m(32/m) : R3m
4.CB.05	Brizziite	NaSb⁵⁺O₃	Trig. 3 : R3
4.CB.05	Tistarite	Ti³⁺₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Hematite	Fe₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Ecandrewsite	ZnTiO₃	Trig. 3 : R3
4.CB.05	Melanostibite	Mn²⁺₂Fe³⁺Sb⁵⁺O₆	Trig. 3 : R3
4.CB.05	'UM1998-11-O-AuHSb'	Au⁺₂Sb³⁺O₂(OH)
4.CB.05	Karelianite	V³⁺₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Corundum	Al₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Eskolaite	Cr₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Geikielite	MgTiO₃	Trig. 3 : R3
4.CB.05	Akimotoite	MgSiO₃	Trig. 3 : R3
4.CB.05	'Unnamed (Fe-Cr Oxide)'	FeCrO₃	Trig. 3 : R3
4.CB.05	'Auroantimonate'	AuSbO₃
4.CB.05	Hemleyite	Fe²⁺SiO₃	Trig. 3 : R3
4.CB.05	Ilmenite	Fe²⁺TiO₃	Trig. 3 : R3
4.CB.05	Pyrophanite	Mn²⁺TiO₃	Trig. 3 : R3
4.CB.10	Bixbyite-(Fe)	(Fe,Mn)₂O₃	Iso.
4.CB.10

Iseite

About IseiteHide

Unique IdentifiersHide

Similar NamesHide

IMA Classification of IseiteHide

Classification of IseiteHide

Mineral SymbolsHide

Physical Properties of IseiteHide

Optical Data of IseiteHide

Chemistry of IseiteHide

Crystallography of IseiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of IseiteHide

Synonyms of IseiteHide

Other Language Names for IseiteHide

Relationship of Iseite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Related Minerals - Strunz-mindat Grouping Hide