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David London

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David London

Michael H Engel

Ph.D., 1981, Arizona State University
M.S., 1979, Arizona State University
B.A., 1975, Wesleyan University


Areas of Interest

Experimental Geochemistry, Mineralogy, Igneous and Metamorphic Petrology, Economic Geology of Metals


My research pertains to the chemical evolution of felsic magmas. This work entails iterations between field study, laboratory analysis, and experimental validation. For the most part, the experimental programs that we conduct are fundamental to silicate science. These include measurements of crystal nucleation and growth from melt or vapor, interactions among ions during their chemical diffusion through melt, morphologies and preferred growth directions of crystals as functions of growth conditions, elemental partitioning between crystals, melt, and vapor, and stability fields of common and rare minerals of petrologic value. Though foundational in their own right, I have applied these studies to the origins and internal evolution of granitic pegmatites, some of which are the most chemically and texturally complex rocks known (on Earth or elsewhere).

Courses Taught

Physical Geology for Science and Engineering Majors

Introduction to Mineral Sciences

Petrology Seminar

Economic Geology – Metallic Deposits


Faculty Website

Chair and managing editor of the Pegmatite Interest Group, sponsored by the Mineralogical Society of America at

Selected Publications

London, D. (2018c) Ore-forming processes within granitic pegmatites. Invited review for Ore Geology Reviews, 101, 349-383.

London, D. (2018b) Reading pegmatites: what quartz and feldspar say. Rocks and Minerals, 93, 320-336.

Maner, J.L. and London, D. (2018a) Fractionation of the isotopes of boron between granitic melt and aqueous solution at 700°C and 800°C (200 MPa). Chemical Geology, 489, 16-27.

Acosta-Vigil, A., London, D., Morgan VI, G.B., Cesare, B., Buick, I., Hermann, J., and Bartoli, O. (2017e) Primary crustal melt compositions: Insights into the controls, mechanisms and timing of generation from kinetics experiments and melt inclusions, Lithos, 286, 454-479.

London, D. and Morgan, G.B. VI (2017d) Experimental crystallization of the Macusani obsidian, with applications to lithium-rich granitic pegmatites. Journal of Petrology, 58, 1005–1030.

Maner, J.L. and London, D. (2017c) The boron isotopic evolution of the Little Three pegmatites, Ramona, California. Chemical Geology, 460, 70-83.

London, D. (2017b) Reading pegmatites: what lithium minerals say. Rocks and Minerals, 92, 144-156.

London, D. (2017a) Hydrothermal quartz from McCurtain County, Oklahoma. Rocks & Minerals, 92, 30-35.

London, D. (2016b) Rare-element granitic pegmatites, in Verplanck, P.L. and Hitzman, M.W. (eds), invited chapter for Rare earth and critical elements in major deposit types, Reviews in Economic Geology, Society of Economic Geologists, Inc, Littleton, CO, 18, 165–193.

London, D. (2016a) Reading pegmatites: what tourmaline says. Rocks & Minerals, 91, 132-149.

London, D. (2015b) Reading pegmatites: what beryl says. Rocks & Minerals, 90, 138-149.

London, D. (2015a) Reply to Thomas and Davidson on "A petrologic assessment of internal zonation in granitic pegmatites" (London, 2014a). Lithos, 212–215, 469–484.

London, D. (2014b) Subsolidus isothermal fractional crystallization. American Mineralogist, 99, 543-546.

London, D. (2014a) A petrologic assessment of internal zonation in granitic pegmatites. Invited review for Lithos, 184-187, 74-104.

London, D. (2008) Pegmatites. Canadian Mineralogist Special Publication, 10, 368 p.