Miyawaki, Ritsuro, Matsubara, Satoshi, Yokoyama, Kazumi, Shigeoka, Masako, Momma, Koichi, Yamamoto, Sadaoki (2015) Mieite–(Y), Y₄Ti(SiO₄)₂O[F,(OH)]₆, a new mineral in a pegmatite at Souri Valley, Komono, Mie Prefecture, central Japan. Journal of Mineralogical and Petrological Sciences, 110 (3) 135-144 doi:10.2465/jmps.150106

Classification of Mieite-(Y)Hide

Strunz-mindat (2024):

9.AG.25

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination

Dana 8th ed.:

52.4.4.3

52 : NESOSILICATES Insular SiO₄ Groups and O,OH,F,H₂O
4 : Insular SiO₄ Groups and O, OH, F, and H₂O with cations in [6] and/or >[6] coordination

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
Mi-Y	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 Mieite-(Y)Hide

Lustre:

Adamantine

Transparency:

Transparent

Colour:

Pale amber yellow

Streak:

White

Hardness:

6 on Mohs scale

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Irregular/Uneven

Density:

4.61 g/cm³ (Calculated)

Optical Data of Mieite-(Y)Hide

Type:

Biaxial

RI values:

n_α = 1.694(2) n_γ = 1.715(5)
Warning: number_format() expects parameter 1 to be float, string given in /home/mindat/www/show_class.php on line 4387

Max Birefringence:

δ = 0.021

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

Surface Relief:

Moderate

Pleochroism:

Non-pleochroic

Comments:

anomalous blue interference colors

Chemistry of Mieite-(Y)Hide

Mindat Formula:

Y₄Ti(SiO₄)₂O[F,(OH)]₆

Elements listed:

F, H, O, Si, Ti, Y - search for minerals with similar chemistry

Crystallography of Mieite-(Y)Hide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Space Group:

Cmcm

Setting:

Cmcm

Cell Parameters:

a = 14.942(2) Å, b = 10.633(2) Å, c = 7.0365(8) Å

Ratio:

a:b:c = 1.405 : 1 : 0.662

Unit Cell V:

1100.3 Å³

Comment:

From raw - not annealed material.

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)
0015895	Mieite-(Y)	Balko V P, Bakakin V V (1975) Crystal-structure of natural yttrium and rare-earth fluorotitano-silicate (Y,Ree)4(F,OH)6TiO[SiO4]2 (yftisite) Zhurnal Strukturnoi Khimii 16 837-842		1975		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Mieite-(Y)'
loop_
_publ_author_name
'Balko V P'
'Bakakin V V'
_journal_name_full 'Zhurnal Strukturnoi Khimii'
_journal_volume 16 
_journal_year 1975
_journal_page_first 837
_journal_page_last 842
_publ_section_title
;
 Crystal-structure of natural yttrium and rare-earth fluorotitano-silicate
 (Y,Ree)4(F,OH)6TiO[SiO4]2 (yftisite)
;
_database_code_amcsd 0015895
_chemical_formula_sum 'Y4 Ti Si2 O9 F6'
_cell_length_a 14.949
_cell_length_b 10.626
_cell_length_c 7.043
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1118.767
_exptl_crystal_density_diffrn      4.261
_symmetry_space_group_name_H-M 'C m c m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,y,z'
  '1/2-x,1/2+y,z'
  'x,-y,-z'
  '1/2+x,1/2-y,-z'
  'x,y,1/2-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,1/2+z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Y1   0.14640   0.43680   0.25000   0.01520
Y2   0.13130   0.79330   0.25000   0.01267
Ti   0.00000   0.00000   0.50000   0.01646
Si   0.15590   0.12000   0.25000   0.00253
O1   0.09540   0.12620   0.05530   0.01267
O2   0.29520   0.48540   0.25000   0.00887
O3   0.22010   0.24870   0.25000   0.00887
O4   0.50000   0.43370   0.25000   0.00887
F1   0.35820   0.11810   0.06100   0.01140
F2   0.00000   0.42040   0.25000   0.05319
F3   0.00000   0.69870   0.25000   0.02406

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
5.46 Å	(60)
4.26 Å	(70)
3.76 Å	(90)
3.54 Å	(80)
3.48 Å	(80)
2.68 Å	(100)
2.43 Å	(50)
2.16 Å	(80)

Comments:

From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites

Type Occurrence of Mieite-(Y)Hide

Type Locality:

ⓘ Unnamed pegmatite, Yunoyama-onsen, Komono town, Mie District, Mie Prefecture, Japan

General Appearance of Type Material:

Amber yellow mass about 1cm.

Place of Conservation of Type Material:

Type material is deposited in the collections of the National Museum of Nature and Science, Amakubo, Tsukuba, Ibaraki, Japan, registration number NSM-M43627

Geological Setting of Type Material:

Pegmatite

Reference:

Miyawaki, R., Matsubara, S., Yokoyama, K., Shigeoka, M., Momma, K., Yamamoto, S. (2015) Mieite–(Y), Y4Ti(SiO4)2O[F,(OH)]6, a new mineral in a pegmatite at Souri Valley, Komono, Mie Prefecture, central Japan. Journal of Mineralogical and Petrological Sciences: 110(3): 135-144.

Download:

http://rruff.info/rruff_1.0/uploads/JMPS110_135.pdf

Synonyms of Mieite-(Y)Hide

IMA2014-020

Common AssociatesHide

Associated Minerals Based on Photo Data:

2 photos of Mieite-(Y) associated with Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂
2 photos of Mieite-(Y) associated with Nepheline	Na₃K(Al₄Si₄O₁₆)
2 photos of Mieite-(Y) associated with Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

Related Minerals - Strunz-mindat Grouping Hide

9.AG.	Ivanyukite-Na-T	Na₂Ti₄(SiO₄)₃(OH)O₃ · 7H₂O	Trig. 3m : R3m
9.AG.	Ivanyukite-Na-C	Na₂Ti₄(SiO₄)₃(OH)₂O₂ · 6H₂O	Iso. 4 3m : P4 3m
9.AG.	Edgrewite	Ca₉(SiO₄)₄F₂	Mon. 2/m : P2₁/b
9.AG.	Aluminotaipingite-(CeCa)	(Ce₆Ca₃)◻Al(SiO₄)₃[SiO₃(OH)]₄F₃	Trig. 3m : R3c
9.AG.02	Gatedalite	ZrMn²⁺₂Mn³⁺₄SiO₁₂	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.AG.2	Skogbyite	Zr(Mg₂Mn³⁺₄)SiO₁₂	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.AG.05	Abswurmbachite	CuMn³⁺₆(SiO₄)O₈	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.AG.05	Braunite	Mn²⁺Mn³⁺₆(SiO₄)O₈	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.AG.05	Neltnerite	CaMn³⁺₆(SiO₄)O₈	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.AG.05	Braunite-II	CaMn³⁺₁₄(SiO₄)O₂₀	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/acd
9.AG.10	Långbanite	Mn²⁺₄Mn³⁺₉Sb⁵⁺O₁₆(SiO₄)₂	Trig. 3m : P3m1
9.AG.12	Taipingite-(CeCa)	(Ce₇Ca₂)◻Mg(SiO₄)₃[SiO₃(OH)]₄F₃	Trig. 3m : R3c
9.AG.15	Malayaite	CaSn(SiO₄)O	Mon. 2/m
9.AG.15	Titanite	CaTi(SiO₄)O	Mon. 2/m : P2₁/b
9.AG.15	Vanadomalayaite	CaV⁴⁺(SiO₄)O	Mon. 2/m : B2/b
9.AG.15	Natrotitanite	(Na_0.5Y_0.5)Ti(SiO₄)O	Mon. 2/m : B2/b
9.AG.15	Żabińskiite	Ca[Al_0.5(Ta,Nb)_0.5)](SiO₄)O	Tric. 1
9.AG.20	Cerite-(CeCa)	(Ce₇Ca₂)◻Mg(SiO₄)₃(SiO₃OH)₄(OH)₃	Trig. 3m : R3c
9.AG.20	Ferricerite-(LaCa)	(La₆Ca₃)◻Fe³⁺(SiO₄)₃(SiO₃OH)₄(OH)₃	Trig. 3m : R3c
9.AG.20	Aluminocerite-(CeCa)	(Ce₆Ca₃)◻Al(SiO₄)₃[SiO₃(OH)]₄(OH)₃	Trig. 3m : R3c
9.AG.20	Nipeiite-(Ce)	Ce₉Fe³⁺(SiO₄)₆[SiO₃(OH)](OH)₃	Trig. 3m : R3c
9.AG.25	Trimounsite-(Y)	Y₂Ti₂(SiO₄)O₅	Mon. 2/m : P2₁/b
9.AG.25	Yftisite-(Y)	(Y,Dy,Er)₄(Ti,Sn)(SiO₄)₂O(F,OH)₆
9.AG.30	Sitinakite	KNa₂Ti₄(SiO₄)₂O₅(OH) · 4H₂O	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mcm
9.AG.35	Kittatinnyite	Ca₂Mn₂Mn(SiO₄)₂(OH)₄ · 9H₂O	Hex.
9.AG.40a	Natisite	Na₂Ti(SiO₄)O	Tet. 4/mmm (4/m 2/m 2/m)
9.AG.40b	Paranatisite	Na₂Ti(SiO₄)O	Orth. mmm (2/m 2/m 2/m) : Pmma
9.AG.45	Törnebohmite-(Ce)	Ce₂Al(SiO₄)₂(OH)	Mon. 2/m : P2₁/b
9.AG.45	Törnebohmite-(La)	La₂Al(SiO₄)₂(OH)
9.AG.50	Kuliokite-(Y)	Y₄Al(SiO₄)₂(OH)₂F₅	Tric. 1 : P1
9.AG.50	Ivanyukite-Na	Na₂Ti₄(SiO₄)₃(OH)₂O₂ · 6H₂O	Trig. 3m : R3m
9.AG.50	Ivanyukite-K	K₂Ti₄(SiO₄)₃(OH)₂O₂ · 9H₂O	Iso. 4 3m : P4 3m
9.AG.50	Ivanyukite-Cu	CuTi₄(SiO₄)₃(OH)₂O₂ · 7H₂O	Iso. 4 3m : P4 3m
9.AG.50	Hydroxyledgrewite	Ca₉(SiO₄)₄(OH)₂	Mon. 2/m : P2₁/b
9.AG.52	Ulfanderssonite-(Ce)	(Ce₁₅Ca)_Σ16Mg₂(SiO₄)₁₀(SiO₃OH)(OH,F)₅Cl₃	Mon. m : Bm
9.AG.55	Chantalite	CaAl₂(SiO₄)(OH)₄	Tet. 4/m : I4₁/a
9.AG.60	Mozartite	CaMn³⁺(SiO₄)(OH)	Orth. 2 2 2 : P2₁ 2₁ 2₁
9.AG.60	Vuagnatite	CaAl(SiO₄)(OH)	Orth. 2 2 2 : P2₁ 2₁ 2₁
9.AG.65	Hatrurite	Ca₃(SiO₄)O	Trig.
9.AG.70	Jasmundite	Ca₁₁(SiO₄)₄O₂S	Tet. 4 2m : I4m2
9.AG.75	Afwillite	Ca₃(HSiO₄)₂ · 2H₂O	Mon. m : Bb
9.AG.80	Bultfonteinite	Ca₂(HSiO₄)F · H₂O	Tric. 1 : P1
9.AG.85	Zoltaiite	BaV⁴⁺₂V³⁺₁₂(SiO₄)₂O₁₉	Trig. 3 : P3
9.AG.90	Tranquillityite	(Fe²⁺,Ca)₈(Zr,Y)₂Ti₃(SiO₄)₃O₁₂	Hex.

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Mieite-(Y)Hide

mindat.org URL:

https://www.mindat.org/min-46143.html
Please feel free to link to this page.

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for Mieite-(Y)Hide

Reference List:

Cámara, F., Belakovskiy, D. (2016) New mineral names. American Mineralogist: 101: 748-751.

(2023) Mieite-(Y) Handbook of Mineralogy. Mineralogical Society of America

Localities for Mieite-(Y)Hide

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)

Mie Prefecture

Mie District

Komono town

Yunoyama-onsen

ⓘ Unnamed pegmatite (TL)

Matsubara et al. (2014) +1 other reference

Mieite-(Y)

About Mieite-(Y)Hide

Unique IdentifiersHide

IMA Classification of Mieite-(Y)Hide