Wednesday, March 6, 2013

Gemstone of the Week: Phosphosiderite

(Phosphosiderite image found on gemaddicts.com)
(Phosphosiderite image found on manchesterminerals.co.uk)


Phosphosiderite, while a bit of a tongue twister, is a really a lovely gemstone.  Phosphosiderite was discovered in 1890 and its name is a combination of phosphate, due to its chemical composition, and the Greek word sideros meaning "for iron." Phosphosiderite is a hardness 3.5-4 and may be transparent, translucent, or, as evidenced in the above images, it may be opaque. It has a vitreous or resinous luster and may be purple to reddish-violet, rose red, peachy pink, brownish yellow, moss green, red, pink, or colourless. In transmitted light, it may appear rose to colourless. Phosphosiderite tends to form as either spherical, rounded aggregates, or as crust-like aggregates on a matrix. It may be found in: Australia, Argentina, Austria, Belgium, Brazil, Cameroon, Canada (the Yukon Territory), Columbia, Czech Republic, Finland, France, Germany, Hungary, Ireland, Italy, Liberia, Madagascar, Morocco, Mozambique, Namibia, Portugal, Russia, Rwanda, South Africa, Spain, Sweden, Switzerland, England, Scotland, and the states of Alabama, Arizona, Arkansas, California, Colorado, Florida, Georgia, Maine, Nevada, New Hampshire, New Jersey, North Carolina, South Dakota, Utah, Virgina, and Wyoming.

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