Takedaite

Takedaite, etc.

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite, etc.

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite, etc.

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

Takedaite

Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

About TakedaiteHide

Professor Hiroshi Takeda 2007

Formula:

Ca₃[BO₃]₂

Colour:

White to pale grey

Lustre:

Vitreous

Hardness:

4½

Specific Gravity:

3.10

Crystal System:

Trigonal

Name:

Named in honor of Hiroshi Takeda (武田 弘) (b. 12 September 1934), professor at the Mineralogical Institute, University of Tokyo, Japan, for his contributions to mineralogy. The asteroid (4965) Takeda is also named after him.

Type Locality:

ⓘ Fuka mine, Fuka, Bitchū, Takahashi City, Okayama Prefecture, Japan

This page provides mineralogical data about Takedaite.

Unique IdentifiersHide

IMA Classification of TakedaiteHide

Classification of TakedaiteHide

Mineral SymbolsHide

Physical Properties of TakedaiteHide

Optical Data of TakedaiteHide

Type:

Uniaxial (-)

RI values:

n_ω = 1.726 n_ε = 1.630

Max Birefringence:

δ = 0.096

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

High

Chemistry of TakedaiteHide

Crystallography of TakedaiteHide

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)
0009534	Takedaite	Vegas A, Cano F H, Garcia-Blanco S (1975) The crystal structure of calcium orthoborate: a redetermination Acta Crystallographica B31 1416-1419		1975		0	293
0014736	Takedaite	Schuckmann W (1969) Zur kristallstruktur des calcium-borates Ca3(BO3)2 Neues Jahrbuch fur Mineralogie, Monatshefte 1969 142-144		1969	synthetic	0	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Takedaite' loop_ _publ_author_name 'Vegas A' 'Cano F H' 'Garcia-Blanco S' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 31 _journal_year 1975 _journal_page_first 1416 _journal_page_last 1419 _publ_section_title ; The crystal structure of calcium orthoborate: a redetermination ; _database_code_amcsd 0009534 _chemical_formula_sum 'Ca3 B2 O6' _cell_length_a 8.6377 _cell_length_b 8.6377 _cell_length_c 11.849 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 765.612 _exptl_crystal_density_diffrn 3.095 _symmetry_space_group_name_H-M 'R -3 c' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' 'x,x-y,1/2+z' '2/3+x,1/3+x-y,5/6+z' '1/3+x,2/3+x-y,1/6+z' 'y,x,1/2-z' '2/3+y,1/3+x,5/6-z' '1/3+y,2/3+x,1/6-z' '-x+y,y,1/2+z' '2/3-x+y,1/3+y,5/6+z' '1/3-x+y,2/3+y,1/6+z' '-x,-x+y,1/2-z' '2/3-x,1/3-x+y,5/6-z' '1/3-x,2/3-x+y,1/6-z' '-y,-x,1/2+z' '2/3-y,1/3-x,5/6+z' '1/3-y,2/3-x,1/6+z' 'x-y,-y,1/2-z' '2/3+x-y,1/3-y,5/6-z' '1/3+x-y,2/3-y,1/6-z' 'y,-x+y,-z' '2/3+y,1/3-x+y,1/3-z' '1/3+y,2/3-x+y,2/3-z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' '-x,-y,-z' '2/3-x,1/3-y,1/3-z' '1/3-x,2/3-y,2/3-z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' 'x-y,x,-z' '2/3+x-y,1/3+x,1/3-z' '1/3+x-y,2/3+x,2/3-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Ca 0.35814 0.00000 0.25000 B 0.00000 0.00000 0.11761 O 0.16624 0.01297 0.11496 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Ca 0.00563 0.00665 0.01064 0.00332 0.00056 0.00111 B 0.00645 0.00645 0.00774 0.00323 0.00000 0.00000 O 0.00650 0.00788 0.01541 0.00411 -0.00235 -0.00050

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of TakedaiteHide

Synonyms of TakedaiteHide

Other Language Names for TakedaiteHide

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Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for TakedaiteHide

References for TakedaiteHide

Localities for TakedaiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Japan (TL)
Okayama Prefecture Takahashi City Bitchū Fuka ⓘ Fuka mine (TL)	Mineralogical Record: 27: 306. +2 other references