This volume of Mineralogical Magazine is dedicated to Edward Sturgis Grew in celebration of his 80th birthday. My colleagues and I are grateful for the chance to honour Ed’s long and distinguished career through this collection of contributions. A decade ago, Kristiansen (Reference Kristiansen2015) summarized the storied first half-century of Edward Grew’s academic life—a remarkable span that saw many of his seminal contributions to field studies on five continents; to the mineralogy and petrology of lithium, beryllium and boron minerals; and to the education of a generation of students at the University of Maine (Fig. 1). Throughout this distinguished research career Ed has focused on ‘petrologic mineralogy’—the meticulous study of minerals in their paragenetic context.

Figure 1. Ed Grew receiving the Collins medal for scientific excellence in mineralogy and its applications by Frances Wall, the President of the Mineralogical Society of the UK and Ireland in 2015.
Ed Grew’s outsized influence is manifest in more than 250 publications spanning 55 years. Perhaps best known are his numerous contributions to the mineralogy of beryllium, boron, and lithium (e.g. Grew, Reference Grew1981a, Reference Grew1982a, Reference Grew1986, Reference Grew1988, Reference Grew1998, Reference Grew2020; Grew and Hazen, Reference Grew and Hazen2014; Grew and Hinthorne, Reference Grew and Hinthorne1983; Grew and Sandiford, Reference Grew and Sandiford1984; Grew et al., Reference Grew, Chernovsky, Werding, Abraham, Marquez and Hinthorne1990, Reference Grew1998, Reference Grew, Yates, Barbier, Shearer, Sheraton and Shiraishi2000, Reference Grew, Suzuki and Asami2001, Reference Grew, Yates, Shearer, Hagerty, Sheraton and Sandiford2006, Reference Grew, Graetsch, Pöter, Yates, Buick, Bernhardt, Schreyer, Werding, Carson and Clarke2008a, Reference Grew, Bada and Hazen2011, Reference Grew, Carson, Christy and Boger2013a, Reference Grew, Dymek, De Hoog, Harley, Boak, Hazen and Yates2015, Reference Grew, Krivovichev, Hazen and Hystad2016, Reference Grew, Hystad, Hazen, Krivovichev and Gorelova2017, Reference Grew, Hystad, Toapanta, Eleish, Ostroverkhova, Golden and Hazen2019; Bloodaxe et al., Reference Bloodaxe, Hughes, Dyar, Grew and Guidotti1999; Buick et al., Reference Buick, Grew, Armbruster, Medenbach, Yates, Bebout and Clarke2008; Cempirek et al., Reference Cempírek, Grew, Kampf, Ma, Novák, Gadas, Škoda, Galiová, Pezzotta, Groat and Krivovichev2016; Dobrzhinetskaya et al., Reference Dobrzhinetskaya, Wirth, Yang, Green, Hutcheon, Weber and Grew2014; Hughes et al., Reference Hughes, Ertl, Dyar, Grew, Shearer, Yates and Guidotti2000; Tagg et al., Reference Tagg, Cho, Dyar and Grew1999), including the encyclopaedic Boron (Grew, Reference Grew1996) and Beryllium (Grew, Reference Grew2002) volumes 33 and 50, respectively, of the Reviews in Mineralogy and Geochemistry. Thanks to the collective impact of these and many other publications by Ed Grew, we have a remarkably comprehensive understanding of Be and B minerals.
Edward Grew’s mineralogical efforts also included decades of research on the igneous and metamorphic petrologic mineralogy of Antarctica, where he was part of nine research expeditions between 1972 and 2004 (Grew, Reference Grew1978, Reference Grew1980, Reference Grew1981a, Reference Grew1981b, Reference Grew1982b, Reference Grew, A.E.M and F.G1982c, Reference Grew1983, Reference Grew1998; Grew and Hinthorne, Reference Grew and Hinthorne1983; Grew and Manton, Reference Grew and Manton1979; Grew and Sandiford, Reference Grew and Sandiford1984; Grew et al., Reference Grew, Kleinschmidt and Schubert1984, Reference Grew1988, Reference Grew1998, Reference Grew, Yates, Barbier, Shearer, Sheraton and Shiraishi2000, Reference Grew, Suzuki and Asami2001, Reference Grew, Yates, Shearer, Hagerty, Sheraton and Sandiford2006, Reference Grew, Armbruster, Medenbach, Yates and Carson2007, Reference Grew, Carson, Christy, Mass, Yaxley, Boger and Fanning2012, Reference Grew, Carson, Christy and Boger2013a; Asami et al., Reference Asami, Suzuki and Grew2002, Reference Asami, Suzuki and Grew2005; DePaolo et al., Reference DePaolo, Manton, Grew and Halpern1982; Manton et al., Reference Manton, Grew, Hofmann and Sheraton1992; Fig. 2). Of special interest were Ed’s many publications on the high-pressure metamorphism of late Archean and early Proterozoic rocks and associated complex pegmatites—rocks that contained a host of unusual phases.

Figure 2. Camping at Dallwitz Nunatak during an Australian Antarctic Expedition in January 1978. Site of the first world discovery of an ultra-high temperature sapphirine and quartz assemblage.
Added to these publications are fundamental contributions to systematic mineralogy, including the definitive statements regarding nomenclature of the sapphirine and surinamite groups (Grew et al., Reference Grew, Hålenius, Pasero and Barbier2008b) and the garnet supergroup (Grew et al., Reference Grew, Locock, Mills, Galuskina, Galuskin and Hålenius2013b). Ed Grew has also been involved in the discovery and characterization of 31 new minerals, including dissakisite-(Ce) [CaCe(Al2Mg)(Si2O7)(SiO4)O(OH); Grew et al., Reference Grew, Essene, Peacor, Su and Asami1991]; hyttsjöite [Pb18Ba2Ca5Mn2Fe2Si30O90Cl.6H2O; Grew et al., Reference Grew, Peacor, Rouse, Yates, Su and Marquez1996]; boralsilite [Al16B6O30(Si2O7); Grew et al., Reference Grew, McGee, Yates, Peacor, Rouse, Huijsmans, Shearer, Weidenbeck, Thost and Su1998, Reference Grew, Graetsch, Pöter, Yates, Buick, Bernhardt, Schreyer, Werding, Carson and Clarke2008a]; khmaralite [Mg4(Mg3Al9)O4(Si5Be2Al5O36); Barbier et al., Reference Barbier, Grew, Moore and Su1999; Grew et al., Reference Grew, Hålenius, Pasero and Barbier2008b]; ominelite [(Fe,Mg)Al3BSiO9, Hiroi et al., Reference Hiroi, Grew, Motoyoshi, Peacor, Rouse, Matsubara, Yokoyama, Miyawaki, McGee, Su, Hokada, Furukawa and Shibasaki2001]; chopinite [Mg3(PO4)2; Grew et al., Reference Grew, Armbruster, Medenbach, Yates and Carson2007]; boromullite [Al9BSi2O19,; Buick et al., Reference Buick, Grew, Armbruster, Medenbach, Yates, Bebout and Clarke2008]; menzerite-(Y) [CaY2Mg2(SiO4)3; Grew et al., Reference Grew, Marsh, Yates, Lazic, Armbruster, Locock, Bell, Dyar, Bernhardt and Medenbach2010]; qingsongite [BN; Dobrzhinetskaya et al., Reference Dobrzhinetskaya, Wirth, Yang, Green, Hutcheon, Weber and Grew2014]; vránaite [Al16B4Si4O38; Cempírek et al., Reference Cempírek, Grew, Kampf, Ma, Novák, Gadas, Škoda, Galiová, Pezzotta, Groat and Krivovichev2016]; khesinite [Ca4Mg2Fe3+10O4(Fe3+10Si2)O36; Galuskina et al., Reference Galuskina, Galuskin, Pakhomova, Widmer, Armbruster, Krüger, Grew, Vapnik, Dzierażanowski and Murashko2017]; and badengzhuite (TiP) and zhiqinite (TiSi2; Xiong et al., Reference Xiong, Xu, Mugnaioli, Gemmi, Wirth, Grew, Robinson and Yang2020).
Ed’s past 15 years have been devoted in large measure to new research directions in the fields of mineral evolution, mineral ecology, and mineral informatics—studies undertaken at a time when most scholars would have retired to less demanding pursuits. I had the great good fortune to collaborate with Ed Grew starting in 2010, shortly after a group of us had introduced research on the changing diversity and distribution of minerals through 4.5 billion years of Earth history—a field we called ‘mineral evolution’. Ed not only embraced these ideas, but he was instrumental in transforming what were initially qualitative descriptions of several stages of mineral evolution into rigorous, data-driven, quantitative explorations. We joined forces as we tackled new projects on the mineral evolution of lithium, beryllium, boron, mercury, and the Anthropocene epoch (Grew et al., Reference Grew, Bada and Hazen2011, Reference Grew, Krivovichev, Hazen and Hystad2016, Reference Grew, Hystad, Toapanta, Eleish, Ostroverkhova, Golden and Hazen2019; Grew and Hazen, Reference Grew and Hazen2014; Hazen et al., Reference Hazen, Bekker, Bish, Bleeker, Downs, Farquhar, Ferry, Grew, Knoll, Papineau, Ralph, Sverjensky and Valley2011, Reference Hazen, Golden, Downs, Hysted, Grew, Azzolini and Sverjensky2012, Reference Hazen, Liu, Downs, Golden, Pires, Grew, Hystad, Estrada and Sverjensky2014, Reference Hazen, Grew, Origlieri and Downs2017a). In every investigation, Ed scrutinized hundreds to thousands of mineral/age/locality data, checking and rechecking every data point. The resulting exacting analyses definitively demonstrated three key aspects of Earth’s evolving mineralogy: (1) the episodicity of mineralization correlated with intervals of supercontinent assembly; (2) the explosion of mineral diversity following the Great Oxygenation Event; and (3) the co-evolution of the geosphere and biosphere.
In 2015, Ed Grew played key roles in developing another new data-driven direction—‘mineral ecology’, or the quantitative investigation of changing mineral associations and distributions through deep time (Grew et al., Reference Grew, Hystad, Hazen, Krivovichev and Gorelova2017, Reference Grew, Hystad, Toapanta, Eleish, Ostroverkhova, Golden and Hazen2019; Hazen et al., Reference Hazen, Grew, Downs, Golden and Hystad2015a, Reference Hazen, Hystad, Downs, Golden, Pires and Grew2015b, Reference Hazen, Hystad, Golden, Hummer, Liu, Downs, Morrison, Ralph and Grew2017b, Reference Hazen, Downs, Elesish, Fox, Gagné, Golden, Grew, Hummer, Hystad, Krivovichev, Li, Liu, Ma, Morrison, Pan, Pires, Prabhu, Ralph, Runyon and Zhong2019; Hystad, Reference Hystad, Downs, Grew and Hazen2015). An important finding of these studies is that the distribution of known minerals and their localities can be used to predict the number of ‘missing minerals’—species that occur on Earth but have yet to be discovered and described. Ed applied these statistical methods to the minerals of his three favourite elements—lithium, beryllium and boron—to demonstrate that hundreds of minerals containing these essential elements are waiting to be characterized.
On a personal note, I owe Ed Grew an immense debt of gratitude. At a time when some prominent Earth scientists rejected the precepts of mineral evolution and questioned the application of informatics to describe and explain complex mineral systems, Ed embraced these alternative approaches. His decades of experience in petrologic mineralogy, his deep understanding of mineral-forming environments, his sustained service to the mineralogical community, and his uncompromising demand for rigor set our nascent studies on a sustainable path of discovery that continues today with a new generation of dynamic mineralogists.
Thank you, Ed!

