Kozoite-(La), La(CO_3)(OH), a new mineral from Mitsukoshi, Hizen-cho, Saga Prefecture, Japan MIYAWAKI Ritsuro MATSUBARA Satoshi YOKOYAMA Kazumi IWANO Shoichiro HAMASAKI Kazuhiro YUKINORI Isao 日本鉱物科学会 Journal of mineralogical and petrological sciences 13456296 98 4 137 141 2003-08-01 Kozoite-(La), (La, Nd, Ca)(CO3)[(OH), (H2O)], occurs in cavities of alkali olivine basalt at Mitsukoshi, Hizen-cho, Higashi Matsuura-gun, Saga Prefecture, Japan. Minute crystals of kozoite-(La) form a spherical aggregate with kozoite-(Nd). Concentric zoning textures of kozoite-(La) and kozoite-(Nd) can be observed on the fracture of the spherical aggregate. Kozoite-(La) is the La-analogue of kozoite-(Nd) and is a new member of ancylite group minerals. It is orthorhombic, Pmcn, a = 4.986(4) Å, b = 8.513(6) Å, c = 7.227(10) Å, V = 306.7(6) Å3, Z = 4. The three strongest lines in the powder XRD patterns [d(Å), I/I0, hkl] are (4.31, 100, 110 and 020); (3.69, 72, 111 and 021) and (2.93, 57, 121 and 102). 2003-08-01 10011672268 AA11460926 ENG CJP CJPref J-STAGE 0 7 2 Kozoite-(La), La(CO_3)(OH), a new mineral from Mitsukoshi, Hizen-cho, Saga Prefecture, Japan MIYAWAKI Ritsuro MATSUBARA Satoshi YOKOYAMA Kazumi IWANO Shoichiro HAMASAKI Kazuhiro YUKINORI Isao Japan Association of Mineralogical Sciences Journal of Mineralogical and Petrological Sciences Kozoite-(La), (La, Nd, Ca)(CO3)[(OH), (H2O)], occurs in cavities of alkali olivine basalt at Mitsukoshi, Hizen-cho, Higashi Matsuura-gun, Saga Prefecture, Japan. Minute crystals of kozoite-(La) form a spherical aggregate with kozoite-(Nd). Concentric zoning textures of kozoite-(La) and kozoite-(Nd) can be observed on the fracture of the spherical aggregate. Kozoite-(La) is the La-analogue of kozoite-(Nd) and is a new member of ancylite group minerals. It is orthorhombic, Pmcn, a = 4.986(4) Å, b = 8.513(6) Å, c = 7.227(10) Å, V = 306.7(6) Å3, Z = 4. The three strongest lines in the powder XRD patterns [d(Å), I/I0, hkl] are (4.31, 100, 110 and 020); (3.69, 72, 111 and 021) and (2.93, 57, 121 and 102). MIYAWAKI Ritsuro Department of Geology, National Science Museum MATSUBARA Satoshi Department of Geology, National Science Museum YOKOYAMA Kazumi Department of Geology, National Science Museum IWANO Shoichiro Fukuoka Ishinokai (an amateur mineral group in Fukuoka) HAMASAKI Kazuhiro Fukuoka Ishinokai (an amateur mineral group in Fukuoka) YUKINORI Isao Fukuoka Ishinokai (an amateur mineral group in Fukuoka)