Amethyst Mineral Gallery

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Amethyst mineral gallery.

Amethyst is the purple variety of the mineral quartz and is its most famous and valuable gem variety quartz also contains other gemstones such as citrine rose quartz and smoky quartz the color of amethyst is most often caused by iron impurities though it can also be colored by natural radiation exposure. Its physical properties are those of quartz but it contains more iron oxide fe 2 o 3 than any other variety of quartz and experts believe that its colour arises from its iron content. Fluorite is a mineral with a veritable bouquet of brilliant colors. Tall prismatic well shaped crystals are restricted to several mexican localities.

Amethyst can occur as long prismatic crystals that have a six sided pyramid at either end or can form as druzes that are crystalline crusts that only show the pointed terminations. Minerals can be organized mainly according to their chemistry into the following classes. Feldspar a group of related minerals comprises the bulk of the earth s. Fluorite is well known and prized for its glassy luster and rich variety of colors.

A list of the primary chemical classes used to organize mineral species. Quartz is undoubtedly the single most common mineral in the earth s crust ranging from perhaps 12 of continental crust to as much as 50 of oceanic crust as indicated by the composition of spreading ridge volcanic lavas. As a mineral specimen amethyst is popular for its color and nice crystal shapes that produce a handsome purple sparkling cluster. And amatitlan in guerro they occur in elongated crystals that are rarely faceted since collectors pay well for these.

Amethyst galleries mineral gallery minerals. B y name framed unframed. Amethyst galleries mineral gallery describes over 600 mineral species and 5 000 specimens see our new specimens last updated 23 jan 2015 and what s new last updated 03 sep 2014 together with several ways of accessing these descriptions. By class carbonates elements halides oxides.

Amethyst is a very common mineral and is found worldwide. The descriptions include searchable mineralogical data plus other information of interest to students and rock hounds. The range of common colors for fluorite starting from the hallmark color purple then blue green yellow colorless brown pink black and reddish orange is amazing and is only rivaled in color range by quartz. Some estimates place quartz at 21 of the earth s total lithosphere.

The most common minerals. Only a select few of the most famous localities will be mentioned here. Amethyst is sometimes heat treated to deepen the color or to transform it into citrine.