Mineral Specimen Images (Y)

Yimengite: K(Cr,Ti,Fe,Mg)12O19  
Diamond: C

Comments: Birefringence image of diamond displaying the location of yimengite inclusions (1, 2 , 3, 4, and 5) along the different octahedral growth zones. (Lithos, v77:181).
Location: Sese kimberlite (50 km) south of Masvingo, Zimbabwe. Scale: See Image.
© Lithos

Yimengite: K(Cr,Ti,Fe,Mg)12O19  
Diamond: C

Comments: Birefringence image of diamond displaying the location of yimengite inclusions (1, 2 , 3, 4, and 5) along the different octahedral growth zones. (Lithos, v77:181).
Location: Sese kimberlite (50 km) south of Masvingo, Zimbabwe. Scale: See Image.
© Lithos

Yimengite: K(Cr,Ti,Fe,Mg)12O19

Comments: SEM image of the yimengite-5 inclusion intergrown with chromite lamellae. (Lithos, v77:181).
Location: Sese kimberlite (50 km) south of Masvingo, Zimbabwe. Scale: See Image.
© Lithos

Yimengite: K(Cr,Ti,Fe,Mg)12O19

Comments: SEM image of the yimengite-5 inclusion intergrown with chromite lamellae. (Lithos, v77:181).
Location: Sese kimberlite (50 km) south of Masvingo, Zimbabwe. Scale: See Image.
© Lithos

Yingjiangite: (K2,Ca)(UO2)7(PO4)4(OH)6·6(H2O)

Comments: Thin coating of yellow yingjiangite on matrix.
Location: Kladaske Mine, Erzgeborge, Czech Republi. Scale: Picture size 1.5 cm.
© John Veevaert

Yingjiangite: (K2,Ca)(UO2)7(PO4)4(OH)6·6(H2O)

Comments: Thin coating of yellow yingjiangite on matrix.
Location: Kladaske Mine, Erzgeborge, Czech Republi. Scale: Picture size 1.5 cm.
© John Veevaert

Yoderite: Mg2(Al,Fe+++)6Si4O18(OH)2

Comments: Dark bluish-black prismatic yoderite in quartz.
Location: Mautia Hill, Dodoma, Tanzania. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yoderite: Mg2(Al,Fe+++)6Si4O18(OH)2

Comments: Dark bluish-black prismatic yoderite in quartz.
Location: Mautia Hill, Dodoma, Tanzania. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yofortierite: (Mn,Mg)5Si8O20(OH)2·8-9(H2O)

Comments: Radial spray of yofortierite in matrix.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: Picture size 1.5 cm.
© John Veevaert

Yofortierite: (Mn,Mg)5Si8O20(OH)2·8-9(H2O)

Comments: Radial spray of yofortierite in matrix.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: Picture size 1.5 cm.
© John Veevaert

Yoshimuraite: (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)

Comments: Translucent, brown yoshimuraite microcrystal.
Location: Toguchi Mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yoshimuraite: (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)  
Katophorite: Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2

Comments: Dark green katophorite associated with yoshimuraite. Inset fragment shows the transparency of the katophorite.
Location: Toguchi mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Image.
© Rruff Database

Yoshimuraite: (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)

Comments: Translucent, brown yoshimuraite microcrystal.
Location: Toguchi Mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yoshimuraite: (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH)  
Katophorite: Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2

Comments: Dark green katophorite associated with yoshimuraite. Inset fragment shows the transparency of the katophorite.
Location: Toguchi mine, Shidara, Kitashidara-Gun, Aichi, Japan. Scale: See Image.
© Rruff Database

Yoshiokaite: (Ca8-(x/2)[ ](x/2)Al16-xSixO32)

Comments: B&W image of the largest yoshiokaite crystal yet found (grain #23); note fracturing probably caused by shock deformation and the groundmass of regolith glass. (AmMin v75:676).
Location: At a distance of about 224 m from their Apollo 14 lunar lander, in the bottom of a 30-cm-deep trench, Mitchell and Shepard collected the two-gram rock that is regolith breccia 14076. Scale: Scale Bar 50 µm.
© American Mineralogist

Yoshiokaite: (Ca8-(x/2)[ ](x/2)Al16-xSixO32)

Comments: B&W image of the largest yoshiokaite crystal yet found (grain #23); note fracturing probably caused by shock deformation and the groundmass of regolith glass. (AmMin v75:676).
Location: At a distance of about 224 m from their Apollo 14 lunar lander, in the bottom of a 30-cm-deep trench, Mitchell and Shepard collected the two-gram rock that is regolith breccia 14076. Scale: Scale Bar 50 µm.
© American Mineralogist

Yttrobetafite-(Y): (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)

Comments: Fragment of the large grain of compact mustard-yellow yttrobetafite-(Y) from the type locality. Associated minerals are black biotite and redish-brown veinlets of gummite.
Location: Alakurtti pegmatite, Northern Karelia, Murmanskaja Oblast', Northern Region, Russia. Scale: Specimen size is 4.5x2.8x1.4 cm.
© Pavel M. Kartashov

Yttrobetafite-(Y): (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)

Comments: Fragment of the large grain of compact mustard-yellow yttrobetafite-(Y) from the type locality. Associated minerals are black biotite and redish-brown veinlets of gummite.
Location: Alakurtti pegmatite, Northern Karelia, Murmanskaja Oblast', Northern Region, Russia. Scale: Specimen size is 4.5x2.8x1.4 cm.
© Pavel M. Kartashov

Yttrocerite: CaF2 + (Y,Ce)F3

Comments: Blue/purpley Yttrocerite in matrix.
Location: Rockport Granite Company quarry, Rockport, Essex Co., Massachusetts, USA. Scale: Specimen Size 6.9 x 3.7 x 1.8 cm.
© Rob Lavinsky

Yttrocerite: CaF2 + (Y,Ce)F3

Comments: Blue/purpley Yttrocerite in matrix.
Location: Rockport Granite Company quarry, Rockport, Essex Co., Massachusetts, USA. Scale: Specimen Size 6.9 x 3.7 x 1.8 cm.
© Rob Lavinsky