Mineral Development Agency, OYSGSolid Mineral of the Week — CorundumCorundum is a hexagonal crystal structure of aluminum oxide (Al2O3) typically containing traces of iron, titanium, vanadium, and chromium…Oct 8, 2018Oct 8, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — RhodoniteRhodonite is a pink manganese silicate mineral of variable composition that often contains significant amounts of iron, magnesium, and…Oct 2, 2018Oct 2, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — CordieriteCordierite is a silicate mineral with a chemical composition of (Mg.Fe)2Al4Si5O18 and forms a solid solution series with sekaninaite…Sep 19, 2018Sep 19, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — TurquoiseTurquoise is an opaque blue to green mineral that is a hydrated phosphate of copper and aluminium with the chemical formula…Sep 3, 2018Sep 3, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — AmazoniteAmazonite also known as Amazonstone is a green tectosilicate mineral made from microcline. It has the chemical formula K(AlSi3O8), small…Aug 28, 2018Aug 28, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — DiopsideDiopside is a monoclinic pyroxene mineral with composition MgCaSi2O6. It forms a complete solid solution series with hedenbergite…Aug 23, 2018Aug 23, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — KyaniteKyanite is a gemstone that you will rarely encounter in the typical jewelry store. Most people have not heard of kyanite, as it is…Aug 13, 20181Aug 13, 20181
Mineral Development Agency, OYSGSolid Mineral of the Week — EmeraldEmeralds are gem-quality specimens of the beryl mineral family with a rich, distinctly green colour. Emerald, together with ruby and…Aug 9, 2018Aug 9, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — ElbaiteElbaite is a sodium, lithium, aluminium boro-silicate, with the chemical composition Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4. It is a mineral…Jul 30, 2018Jul 30, 2018
Mineral Development Agency, OYSGSolid Mineral of the Week — OpalGem-quality Opal is one of the most popular and spectacular gemstones. A single stone can flash every colour of the spectrum with an…Jul 16, 2018Jul 16, 2018
