...Igor V. Pekov; Natalia V. Zubkova; Nikita V. Chukanov; Vasiliy O. Yapaskurt; Sergey N. Britvin; Anatoly V. Kasatkin; Dmitry Y. Pushcharovsky Oyelite from the Bazhenovskoe deposit, Central Urals, Russia, and the N’Chwaning Mines, Kalahari, South Africa, was studied using electron microprobe, X-ray...

... was actually observed during the topotactic transformation from tobermorite 11 Å to tobermorite 10 Å. The comparison between structural, X-ray powder diffraction, and micro-Raman spectroscopic data on tobermorite 10 Å and oyelite allows to exclude that oyelite may be the natural counterpart of tobermorite 10...

... chondrite: beckettite, burnettite, and paqueite; new terrestrial phosphides: grammatikopoulosite, halamishite, murashkoite, negevite, transjordanite, tsikourasite, and zuktamrurite; kamenevite and new data on oyelite. * All minerals marked with an asterisk have been approved by the IMA CNMMC...

... 3 O 9 ) 2 (OH) 6 ·8H 2 O] after Col. Jenni. Alden also helped to identify and characterize a Crestmore unknown that became the new mineral oyelite [now Ca 5 BSi 4 O 13 (OH) 3 ·4H 2 O], a boron mineral related to tobermorite that also occurs in similar contact rocks in Japan. The successful proposal...

... 1 = 2.35%. I n 1985, during a mineralogical survey at the Ise-Shima region, Japan, one of the authors (S.I.) collected several white minerals with a silky lustre. Initial mineralogical investigations demonstrated that they were oyelite- and ettringite-group minerals ( Minakawa et al. , 1986...

..., omphacite, orpheite, orthochamosite, orthochrysotile, orthoclase, osarizawaite, oyelite, parachrysotile, paraschoepite, perrierite, pigeonite, protoferro-anthophyllite, rilandite, rowlandite-(Y), sodic-ferri-clinoferroholquistite, sodium autunite, sofiite, spadaite, stevensite, strontio-orthojoaquinite...

..., Yuan Xue, Jinhua Hao, Guowu Li*, Hongtao Shen, Chang Li, Aiqing Chen, Natalia V. Zubkova and Igor V. Pekov *E-mail: [email protected] Chemically related to oyelite Triclinic: P 1; structure determined a  = 7.2341(2), b  = 11.2289(3), c  = 12.3471(4) Å, α = 87.229(2), β = 81.587(2...

... ( Zadov et al. 1995 , 2001 ; Merlino et al. 2001 ), rosenhahnite ( Zadov et al. 2000 ), and oyelite ( Pekov et al. 2019 ). The discovery of paratobermorite again highlights the important role of the Bazhenovskoe deposit for the mineralogy of calcium silicate hydrates. The new mineral specimens were...

... et al . 1973 ), clinotobermorite ( Henmi & Kusachi 1992 ), fukalite ( Henmi et al . 1977 ), kusachiite ( Henmi 1995 ), morimotoite ( Henmi et al . 1995 ), oyelite ( Kusachi et al . 1980 ), parasibirskite ( Kusachi et al . 1998 ), and takedaite ( Kusachi et al . 1995 ). Both the new mineral...

... hydrothermal alteration. Plagioclase, a main constituent of the xenoliths, has been altered to hydrous calcium silicate minerals such as oyelite, hydrogarnet, xonotlite, tobermorite, bultfonteinite, apophyllite, and prehnite, all of which are associated with imayoshiite. Imayoshiite occurs as white aggregates...

... gel Plombierite Ca/Si probably ≥ 1.5 * Taylor ( 1964 ) attributed the mineral species tacharanite and oyelite (basal spacing of 12 and 10 Å, respectively) to the tobermorite group. Owing to the lack of structural data, their relationships with the tobermorite group is only speculative...

... Å. In mineralogical literature, the name “10 Å tobermorite” was used to describe a natural phase occurring at Fuka (Japan) and at Crestmore (USA). However, it was later identified with the mineral oyelite ( Kusachi et al ., 1980 ), a silico-borate with the chemical formula Ca 5 BSi 4 O 14 (OH)·6H 2 O. Fig. 6...