Search results

1. Lee Marble

   ... Most are uniaxial negative with low birefringence (~.004); apatite or idocrase seems possible given lithological context. These grains ...

   Raven Mueller - 2015-09-05

2. Eureka

   ... of a very low birefringent, uniaxial negative mineral, apatite seems a likely candidate but others such as vesuvianite are ...

   Ed FitzGerald - 2015-09-05