Abstract
On comparing the indices given for sussexite,1 2Mn(Mg)O2B2O3H2O, with those of Camsellite,2 2MgO.B2O3.H2O, there is a marked discrepancy evident when one considers the specific refractivity of the constituent radicals. Manganese oxide has a higher specific refractivity than magnesium oxide and therefore, sussexite should have the higher indices, contrary to the published values as indicated below.
This content is PDF only. Please click on the PDF icon to access.
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
