| Varieties that are not valid species:• tough, green mineral either jadeite or amphibole• Varieties that are not valid species:• a variety of amber T Massive in matrix with quartz from , | a group of closely-related minerals in the zeolite group• Varieties that are not valid species:• Varieties that are not valid species:• light blue variety of beryl• variety of chrysoberyl D The slightly misshapen octahedral shape of this rough crystal in matrix is typical of the mineral |
|---|---|
| a group of silicate minerals• , a rock composed of feldspar, epidote and quartz• gem variety of grossularite garnet U• Varieties that are not valid species:• Varieties that are not valid species:• red gem variety of beryl C Native• variety of calcite M Muscovite• Varieties that are not valid species:• Iron oxide cemented soil or sediment G• synonym of smoky quartz N• gem corundum of any color except red, especially blue varieties• a brown or black variety of quartz• Varieties that are not valid species:• Varieties that are not valid species:• a monochromatic banded variety of chalcedony• a group of silicate minerals• a massive impure form of uraninite• fibrous serpentine- or amphibole minerals• | Varieties that are not valid species:• Varieties that are not valid species:• green gem variety of beryl |
Varieties that are not valid species:• Varieties that are not valid species:• Varieties that are not valid species:• Varieties that are not valid species:• metamorphic rock - zoisite, ruby, and hornblende• Varieties that are not valid species:• short for minerals of the columbite group• Varieties that are not valid species:• a group of silicate minerals• group name - asbestiform serpentine• A chromian variety of Illite.