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Mieite-(Y)

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Formula:
Y4Ti(SiO4)2O[F,(OH)]6
Colour:
Pale amber yellow
Lustre:
Adamantine
Hardness:
6
Specific Gravity:
4.61 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for the locality (Mie Prefecture)
Compare with described before yftisite-(Y).- mineral with the same composition and structure.


Hide all sections | Show all sections

Classification of Mieite-(Y)Hide

Approved
Approval Year:
2014
9.AG.25

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

Physical Properties of Mieite-(Y)Hide

Adamantine
Transparency:
Transparent
Colour:
Pale amber yellow
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
4.61 g/cm3 (Calculated)

Optical Data of Mieite-(Y)Hide

Type:
Biaxial
RI values:
nα = 1.694(2) nγ = 1.715(5)
Warning: number_format() expects parameter 1 to be float, string given in /home/mindat/www/show_class.php on line 4134
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

Chemical Properties of Mieite-(Y)Hide

Formula:
Y4Ti(SiO4)2O[F,(OH)]6

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:
1,117.95 ų (Calculated from Unit Cell)
Z:
4
Comment:
From raw - not annealed material.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.46(60)
4.26(70)
3.76(90)
3.54(80)
3.48(80)
2.68(100)
2.43(50)
2.16(80)
Comments:
From Type Description.

Type Occurrence of Mieite-(Y)Hide

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

Synonyms of Mieite-(Y)Hide

Related Minerals - Nickel-Strunz GroupingHide

9.AG.EdgrewiteCa9(SiO4)4F2 Mon. 2/m : P21/b
9.AG.05AbswurmbachiteCuMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.10LångbaniteMn2+4Mn3+9Sb5+O16(SiO4)2Trig. 3m : P3m1
9.AG.15MalayaiteCaSn(SiO4)OMon.
9.AG.15TitaniteCaTi(SiO4)OMon. 2/m : P21/b
9.AG.15VanadomalayaiteCaV4+(SiO4)OMon.
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)OMon. 2/m : B2/b
9.AG.15ŻabińskiiteCa[Al0.5(Ta,Nb)0.5)](SiO4)OTric. 1
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Cerite-(La)(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5Mon.
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2OTet.
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
9.AG.40aNatisiteNa2Ti(SiO4)OTet.
9.AG.40bParanatisiteNa2Ti(SiO4)OOrth.
9.AG.45Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5
9.AG.55ChantaliteCaAl2(SiO4)(OH)4Tet. 4/m : I41/a
9.AG.60MozartiteCaMn3+(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.60VuagnatiteCaAl(SiO4)(OH)Orth.
9.AG.65HatruriteCa3(SiO4)OTrig.
9.AG.70JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
9.AG.80BultfonteiniteCa2(HSiO4)F · H2OTric.
9.AG.85ZoltaiiteBaV4+2V3+12(SiO4)2O19Trig. 3 : P3
9.AG.90Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12Hex.

Related Minerals - Dana Grouping (8th Ed.)Hide

52.4.4.1NatisiteNa2Ti(SiO4)OTet.
52.4.4.2ParanatisiteNa2Ti(SiO4)OOrth.
52.4.4.3Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6

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.

References for Mieite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.

Internet Links for Mieite-(Y)Hide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Japan (TL)
 
  • Honshu Island
    • Kinki region
      • Mie Prefecture
        • Komono town
          • Yunoyama-onsen
Matsubara, S., Miyawaki, R., Yokoyama, K., Shigeoka, M., Momma, K., Yamamoto, S. (2014): Magnesiorowlandite-(Y), Y4Mg(Si2O7)2F2, a new mineral in a pegmatite at Souri Valley, Komono, Mie Prefecture, central Japan. Journal of Mineralogical and Petrological Sciences, 109, 109-117ftisite; 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.
Mineral and/or Locality  
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