Okenite with Chalcedony

White radial Okenite entwined with grey botryoidal Chalcedony. Lustre is vitreous. Okenite (CaSi2O5 x2H2O) is a white mineral that may have tints of yellow or blue. Lustre is vitreous or pearly and streak is white. Hardness is 4 1/2 to 5 and cleavage is perfect in one direction. Okenite usually occurs as bladed crystals, fibrous or radial in form. https://www.mindat.org/min-2967.html https://en.wikipedia.org/wiki/Okenite Chalcedony (SiO2) is a variety of Quartz that can be white to grey, brown, blue, black or several other shades. Lustre is waxy, vitreous or dull and streak is white. Hardness is 7. Chalcedony is a microcrystalline variety of Quartz and usually appears as crusts that show botryoidal and mammillary in form but can also be compacted or banded.