Gross was known for her research on the mineralogy of the
Hatrurim Formation. In 1958, she began working at the
Israel Atomic Energy Commission. These rare minerals only form at high temperature, for example in places where
siliceous limestones are
contact-metamorphosed by
volcanic rocks (commonly
basalt). Some of these well crystallized anhydrous minerals, preserved by the local
desertic conditions of this very arid area, serve as end-member reference for the mineral phases formed in the
clinker of man-made
Portland cement, and are still studied as natural analogues. The manufacturing of Portland cement involves a similar process: heating of
limestone or
chalk with siliceous
clay at high temperature (1450 °C). She continued to study these rare minerals and in 1977 published a monograph describing 123 mineral species discovered in
the Hatrurim Formation. Five were previously known only from a single locality, and eight others were known only as artificial products of the cement industry. Gross also discovered several minerals completely new to science:
bentorite,
ye'elimite, and
hatrurite. A fourth mineral discovered by Gross was only described later by Dietmar Weber and Adolf Bischoff, which they named
grossite after Shulamit. She demonstrated that the unique mineral assemblages of the Hatrurim Formation were formed by
pyrometamorphism, and she managed to recreate in the laboratory most of the minerals by heating the precursor
sedimentary rocks of the Ghareb and Taqiye formations. Her discoveries earned her the inaugural Rafael Freund Award of the
Israeli Geological Society in 1979. She became an honorary member of the
Israel Geological Society in 1986. In 2011, a new
perovskite-related mineral from the
Hatrurim Basin was named
shulamitite to honor Shulamit Gross for her works.{{cite journal |author=Victor V Sharygin |author2=Biljana Lazic |author3=Thomas M Armbruster |author4=Mikhail N Murashko |author5=Richard Wirth |author6=Irina O Galuskina |author7=Evgeny V Galuskin |author8=Yevgeny Vapnik |author9=Sergey N Britvin |author10=Alla M Logvinova |year=2012 |title=Shulamitite Ca3TiFe3+AlO8 – a new perovskite-related mineral from Hatrurim Basin, Israel |url=https://pubs.geoscienceworld.org/eurjmin/article-abstract/25/1/97/69710 |journal=European Journal of Mineralogy |volume=25 |issue=1 |pages=97–111 |doi=10.1127/0935-1221/2013/0025-2259 == References ==