eudialyte (original) (raw)

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| | Name: | eudialyte | | | | | | | ------------------- | ---------------------------------------------------------------------- | -------------------------------------------------------------------------------------------- | ----------- | ------- | ---- | | | | Class: | Silicates | | | | | | | | Chemistry: | Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2 Complex Zirconium Silicate | | | | | | | | Color(s): | Brown, red-brown, reddish, pink | | | | | | | | Hardness: | 5 - 5.5 | SpecGrav: | 2.74 - 2.98 | | | | | | Fracture: | uneven | Cleavage: | Indistinct | | | | | | Crystal: | Trigonal, rhombohedral, often tabular or often in massive forms. | | | | | | | | Envronment: | Forms in coarse grained igneous rocks. Chiefly in nepheline - syenites | | | | | | | | Association: | microcline, aegirine, nepheline | | | | | | | | Locals: | | Montana, Arkansas, USA | Canada | Norway | Ireland | USSR | | | | Misc: | It is easily dissolved in acids. | | | | | | | | | | | | | | |

| | Photos & Locals: | | | | | | ------------------------ | ----------------------------------------------------------------------------------------------- | ----------------------------------------------- | | | | | | 1.) Kipawa, Ontario, Canada 2.) Kipawa, Ontario, Canada | 3.) Kipawa, Ontario, Canada | | |

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