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Browsing Геология России by Author "Yang H."

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CRYSTAL CHEMISTRY OF HIGH-PRESSURE BASI4O9 IN THE TRIGONAL (P3) BARIUM TETRAGERMANATE STRUCTURE

Hazen R.M.; Yang H.; Finger L.W.; Fursenko B.A. (1999)

Crystals of BaSi4O9 synthesized at 4 GPa and 1000 degrees C were determined to be isostructural with barium tetragermanate [trigonal, space group P3, a = 11.2469(11) and c = 4.4851(6) Aa, V = 491.3(1) Aa 3 ]. The structure ...
CRYSTAL STRUCTURE AND COMPRESSIBILITY OF A TWO-LAYER POLYTYPE OF PSEUDOWOLLASTONITE (CASIO3)

Yang H.; Prewitt C.T. (1999)

The crystal structure of a synthetic two-layer polytype of CaSiO 3 pseudowollastonite was determined using single-crystal X-ray diffraction data. It is monoclinic with space group C2/c and unit-cell parameters a = 11.8322(6), ...
CRYSTAL STRUCTURE OF A P21/M FERROMAGNESIAN CUMMINGTONITE AT 140 K

Yang H.; Smyth J.R. (1996)

We report a structure refinement of a P2/m ferromagnesian cummingtonite crystal with Fe/(Mg + Fe) = 0.37 at 140 K; this crystal was inverted from the C2/m structure, which is stable at room temperature. The phase-transition ...
CRYSTAL STRUCTURE OF PHASE X, A HIGH PRESSURE ALKALI-RICH HYDROUS SILICATE AND ITS ANHYDROUS EQUIVALENT

Yang H.; Konzett J.; Prewitt C.T. (2001)

Phase X, ascribed by Luth (1995) to a hydrous K-rich silicate formed from the breakdown of K-amphibole at high pressures, was synthesized at 1250–1300 °C and 10–16 GPa in four different compositions: Na1.78(Mg1.89Al0.13)Si2.02O7 ...
PHASE RELATIONS AND STABILITY OF MAGNETOPLUMBITE- AND CRICHTONITE-SERIES PHASES UNDER UPPER-MANTLE P-T CONDITIONS: AN EXPERIMENTAL STUDY TO 15 GPA WITH IMPLICATIONS FOR LILE METASOMATISM IN THE LITHOSPHERIC MANTLE

Konzett J.; Yang H.; Frost D.J. (2005)

High-pressure–high-temperature experiments were performed in the range 7–15 GPa and 1300–1600°C to investigate the stability and phase relations of the K- and Ba-dominant members of the crichtonite and magnetoplumbite ...

Browsing Геология России by Author "Yang H."

Browsing Геология России by Author "Yang H."

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