Synthetic phyllosilicates and the matrix material of C1 and C2 chondrites

Magnesium silicates and gels were synthesized from aqueous solution. A range of products with the Mg/Si ratio ranging from 2:1 to 1:1 was produced. Their composition and crystallinity were found to vary with the time scale available for formation. Structural similarities between these materials and the matrix silicates of Orgueil and Murchison were revealed through X-ray and infrared analysis.     

Step-drawdown tests: linear and nonlinear head loss components

Hydrogeology Journal - Coefficients B and C of the Jacob (1947) equation, usually derived from step-drawdown tests, are commonly attributed to “aquifer losses” and “well...     

Experimental techniques for the investigation of dust condensation processes

Two experimental methods by which silicates may be condensed from vapors of their constituents are discussed and compared. Each has some relevance to astrophysical processes, though the experiments are by necessity simpler than the astrophysical environments.Invited contribution to the Proceedings of a Workshop onThermodynamics and Kinetics of Dust Formation in the Space Medium, held at the Lunar and Planetary Institute, Houston, 6–8 September, 1978.