Mineral Specimen Images (Y)

Yakhontovite: (Ca,K)0.5(Cu,Fe+++,Mg)2Si4O10(OH)2·3(H2O)

Comments: Green coating of yakhontovite in matrix.
Location: Granite Gap, Hidalgo Co., New Mexico, USA. Scale: Specimen Size 2x2.5 cm.
© Diederik Visser

Yakovenchukite-(Y): K3NaCaY2(Si12O30)·4H2O

Comments: B&W image of a druse of yakovenchukite-(Y) crystals in a void within sodalite-aegirine-microcline veinlet in ijoliteurtite. (AmMin v92:1527).
Location: Mt. Kukisvumchorr (Khibiny Massif), Russia. Scale: Picture size 3.0 x 2.4 mm.
© American Mineralogist

Yanomamite: In(AsO4)·2(H2O)

Comments: Gray-blue waxy yanomamite coatings on quartz.
Location: Mangabeira Tin Deposit, Goias, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yarrowite: Cu9S8  
Spionkopite: Cu1.4S

Comments: Blue-black metallic granular spionkopite, intermixed with yarrowite altering, with quartz.
Location: Yarrow Creek, Alberta, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yarrowite: Cu9S8  
Spionkopite: Cu1.4S

Comments: Blue-gray metallic yarrowite grains in granular quartz rock with spionkopite.
Location: Yarrow Creek, Alberta, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yavapaiite: KFe+++(SO4)2

Comments: Translucent pale pinkish-tan colored crystal fragments.
Location: United Verde Mine, Jerome, Verde District, Black Hills (Black Hill Range), Yavapai Co., Arizona, USA. Scale: Fragment Size 1 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Yeatmanite: Mn++9Zn6Sb+++++2Si4O28

Comments: BSE image of willemite (Wil), unaltered yeatmanite (Yeat) and alteration phase (Alt).
Location: Garpenberg Norra mine in Dalarna County, Sweden. (CanMin, v41:201). Scale: See Image.
© Canadian Mineralogist

Yecoraite: Bi5Fe+++3(Te++++O3)(Te++++++O4)2O9·9(H2O)

Comments: Tan to reddish brown resinous yecoraite coatings on quartz.
Location: Marie Elena Mine, Yecora, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yedlinite: Pb6CrCl6(O,OH)8  
Diaboleite: Pb2CuCl2(OH)4

Comments: Minute cranberry-colored rounded yedlinite crystal with blue diaboleite on yellow-brown wulfenite.
Location: Mammoth Mine, Tiger, Pinal County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Yeelimite: Ca4Al6O12(SO4)  
Ellestadite-(OH): Ca5(SiO4,SO4)3(OH,Cl,F)

Comments: Ye'elimite and hydroxylellestadite intimately intergrown as a brownish aggregate in massive anhydrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

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

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

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

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

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