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The Wilson equation (Wilson 1964) is applied to (Fe,Mn,Mg)TiO solid solutions for obtaining the mixing properties of the ternary solid solution at 600 ?C and 1 kbar. The present study utilizes data ...
Six single crystals of Mg (Mg Si Al )Si O with x = 0.05, 0.13, 0.24, 0.38, 0.52, and 0.64 (the 3 x x 2(R)Cx 3 12 majorite solid-solution) were synthesized at 20 GPa and 2000 ?C with a °∞6-8°± type ...
Non-convergent cation ordering in the (Fe O ) (MgAl O ) solid solution was investigated us- ing in-situ time-of-flight neutron powder diffraction. The approach to equilibrium in a sample with x = 0...
Infrared spectra of ordered (P2/n ) and disordered ( C2/c ) pyroxenes belonging to the join augite-jadeite were investigated at room temperature in the range 70–1400 cm 21. The spectra change as a fun...
Single-crystal and powder X-ray diffraction data were collected to characterize the mac-roscopic solid-solution and cation-ordering behavior in the system augite-jadeite (low ac-mite content). We exam...
Celadonite-familymicamineralsoccurringintheTriassicGavenwoodTuffs,Murihiku Supergroup,HokonuiHills,Southland,NewZealand,havebeenanalyzedbyXRD,TEM, AEM,andEMPA.Packetsafewunitcellstoseveralhundrednan...
Anewhigh-pressureMgTiO phasewiththelithiumniobatestructure(R3c)hasbeen roveredfromexperimentsat21GPaand1200C.Phaseswiththelithiumniobate structurewerealsosynthesizedforintermediatecompositionsbetwee...
Magnetic properties of exsolved samples of the (Fe304t(MgAlz04),_x solid solution weremeasured over the temperature range 4-923 K and were correlated with microstructuresobserved by transmission elect...
Samples along the dolomite-ankerite join weresynthesized using a piston-cylinder ap-paratus and the double-capsule method. Some ofthe ankerite samples maybedisordered. Thermal analysis and X-ray diffr...
Anew member ofthe epidote group, androsite-(La), wasfound atAndrosIsland, Cyclades, Greece, as an accessory constituent of metamorphic Mn-rich rocks. Associated minerals are rhodochrosite, braunite, r...
Curietemperatures (Td ofthe (Fe304)x(MgA1204)1-xsolid solution have been deter-minedfrom measurementsofmagneticsusceptibility (x)vs.temperature. Thetrend in Te vs.composition extrapolates to 0Katx =0...
Scapolites are tetragonal framework aluminosilicates withthe general formula M4T12024A, the major constituents being M=Na+ Ca,T=Si+ AI,and A=Cl+ C03+ S-bearing anions, along withminor Fe,Sr,Ba,K,and ...

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