Scolecite

Scolecite is a tectosilicate mineral belonging to the zeolite group. Scolecite commonly occurs as sprays of thin, prismatic needles, frequently flattened on one side, with slanted terminations and striated parallel to the length of the needles. Scolecite is usually colorless or white, but can also be pink, salmon, red or green. It is transparent to translucent.