The Bentorite Mineral

Bentorite is a rear sulfate mineral that was found only in Israel.

Bentorite –   Ca6(Cr,Al)2(SO4)3(OH)12·26(H2O)    

The rare and exotic mineral Bentorite

The mineral was first described in 1980 by Shulamit Gross (1923-2012) for an occurrence in the Hatrurim Formation of Danian age along the western margin of the Dead Sea, Israel.

It was named for Yaakov Kurt Ben-Tor (1910–2002), one the first and leading geologists in Israel.

The mineral has a violet to light violet color and it appears in veins of metamorphic rocks from the Hatrurim formation, mainly in calcite-spurrite marble.

The mineral can be found on the geologic and mineralogical collection at the Institute of Earth Sciences at the Hebrew University of Jerusalem.

The original paper by Shulamit Gross:

Gross, S., 1980. Bentorite. A new mineral from the Hatrurim area, west of the Dead Sea, Israel. Isr. J. Earth Sci., V. 29, pp. 81-84.

As far as we know, the mineral can be found in its place only in outcrops near Arad.

The photos below were taken by Avi Burg and Yehoshua Kolodny. These images were taken near Ma’ale Adumim in an outcrop that no longer exists.

Connected links:

The bentorite mineral in mindat

The bentorite mineral in webmineral

We thank Avi Burg for the information and the photos.