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Dive into the research topics where Robert B. Ferguson is active.

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Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry | 1982

Structure of calcium tartrate tetrahydrate

Frank C. Hawthorne; I. Borys; Robert B. Ferguson

Calcium tartrate tetrahydrate, C a 2 + . C 4 H 4 0 ~ . 4 H 2 O, orthorhombic, P212121, a = 9.631 (2), b = 10.573(3), c = 9.215 (2)A, V = 938.4 A 3, Z = 4, D c = 1.84 Mg m -3. The structure was solved by Patterson and Fourier methods, and refined by full-matrix least squares to an R of 0.037 for 1504 observed reflexions using Mo Ka (2 = 0.71069 A) 0567-7408/82/092461-03501.00 X-radiation. Calcium links the tartrate molecules into infinite chains along e, with the chains cross-linked by a network of hydrogen bonds. Introduction. A gel was prepared by acidification of a sodium silicate solution with tartaric acid in a constant-temperature bath, and a solution of 0.5 mol dm -3


Canadian Mineralogist | 1976

The crystal structures of tantalite, ixiolite and wodginite from Bernic Lake, Manitoba; I, Tantalite and ixiolite

Joel D. Grice; Robert B. Ferguson; Frank C. Hawthorne


Canadian Mineralogist | 1957

The crystallography of synthetic YTaO 4 and fused fergusonite

Robert B. Ferguson


Acta Crystallographica Section C-crystal Structure Communications | 1983

Structure of erbium ditartrate trihydrate, Er4+.2C4H4O62−.3H2O

Frank C. Hawthorne; I. Borys; Robert B. Ferguson


Canadian Mineralogist | 1976

The crystal structures of tantalite, ixiolite and wodginite from Bernic Lake, Manitoba; II, Wodginite

Robert B. Ferguson; Frank C. Hawthorne; Joel D. Grice


Canadian Mineralogist | 1983

THE CRYSTAL STRUCTURE OF PACHNOLITE

Frank C. Hawthorne; Robert B. Ferguson


Canadian Mineralogist | 1989

Characterization of phases and twins in alkali feldspars by the X-ray precession technique

Catherine R. McGregor; Robert B. Ferguson


Canadian Mineralogist | 1980

From unit-cell parameters to Si/Al distribution in K-feldspars

Robert B. Ferguson


Canadian Mineralogist | 1960

The low-temperature phases of the alkali feldspars and their origin

Robert B. Ferguson


Canadian Mineralogist | 1989

THE CRYSTAL STRUCTURE OF ARSENOHAUCHECORNITE

Joel D. Grice; Robert B. Ferguson

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Joel D. Grice

Spanish National Research Council

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Catherine R. McGregor

Maulana Azad National Institute of Technology

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Neil A. Ball

Maulana Azad National Institute of Technology

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