Tufa | Aquarium Safe Limestone Formation | Nevada Ancient Sea Floor meteorite Beautifully Hand-carved and polished rose

Beautifully Hand-carved and polished rose quartz bowl from Madagascar

70 Million Years Ago

87 ppm gallium

carried a deadly arsenal of 184 razor sharp teeth

The Phareodus testis

Tufa | Aquarium Safe Limestone Formation | Nevada Ancient Sea Floor meteorite Beautifully Hand-carved and polished roseNevada tufa is a natural rock that formed 10,000 to 20,000 years ago when half of Nevada was covered by an inland sea called Lahontan. The tufa formed on the sea floor when natural mineral springs came into contact with saline sea water and the dissolved minerals precipitated out of solution. The minerals, calcium carbonate and silica, fell to the sea floor and solidified in horizontal layers in a process similar to that which forms stalactites in