Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
This map shows the geographic impact of E‐an Zen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by E‐an Zen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E‐an Zen more than expected).
This network shows the impact of papers produced by E‐an Zen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by E‐an Zen. The network helps show where E‐an Zen may publish in the future.
Co-authorship network of co-authors of E‐an Zen
This figure shows the co-authorship network connecting the top 25 collaborators of E‐an Zen.
A scholar is included among the top collaborators of E‐an Zen based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with E‐an Zen. E‐an Zen is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Zen, E‐an. (1979). Presentation of the Roebling Medal of the Mineralogical Society of America for 1978 to James B . Thompson Jr.. American Mineralogist. 64. 663–664.1 indexed citations
8.
Zen, E‐an, et al.. (1978). Highly aluminous hornblendes; compositions and occurrences from southwestern Massachusetts. 63. 1088–1099.16 indexed citations
9.
Nord, G. L., Jane M. Hammarstrom, & E‐an Zen. (1978). Zoned plagioclase and peristerite formation in phyllites from southwestern Massachusetts. 63. 947–955.14 indexed citations
10.
Zen, E‐an. (1972). Gibbs free energy, enthalpy, and entropy of ten rock-forming minerals: calculations, discrepancies, implications. American Mineralogist. 57. 524–553.55 indexed citations
Zen, E‐an. (1969). Free energy of formation of pyrophyllite from hydrothermal data: Values, discrepancies, and implications. American Mineralogist. 54. 1592–1606.14 indexed citations
13.
Zen, E‐an. (1967). MIXED-LAYER MINERALS AS ONE-DIMENSIONAL CRYSTALS. American Mineralogist. 52. 635–660.5 indexed citations
14.
Zen, E‐an, et al.. (1964). Paragonite from täsch valley near zermatt, Switzerland. American Mineralogist. 49. 183–190.8 indexed citations
15.
Zen, E‐an & A. L. Albee. (1964). Coexistent muscovite and paragonite in pelitic schists. American Mineralogist. 49. 904–925.43 indexed citations
16.
Zen, E‐an. (1961). Mineralogy and petrology of the system Al2O3-SiO2-H2O in some pyrophyllite deposits of North Carolina. American Mineralogist. 46. 52–66.19 indexed citations
Zen, E‐an. (1957). Preliminary Report on the Mineralogy and Petrology of Some Marine Bottom Samples Off the Coast of Peru and Chile. American Mineralogist. 42. 889–903.10 indexed citations
20.
Zen, E‐an. (1956). Validity of “vegard's law”. American Mineralogist. 41. 523–524.73 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.