spurrite

spurrite

[′spər‚īt]
(mineralogy)
Ca5(SiO4)2(CO3) A light-gray mineral occurring in granular masses.
References in periodicals archive ?
Associated minerals are: spurrite, rustumite, hydrogrossular, andradite, calcite, magnetite and perovskite.
1997) Wadalite, rustumite, and spurrite from La Negra mine, Queretaro, Mexico.
The olshanskyite occurs as pure, glassy-white, twinned microcrystals to 1 cm in length on spurrite, and the nifontovite as rich, gray, glassy translucent masses with rare pockets of millimeter-sized crystals.