neptunite (original) (raw)
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| | Name: | neptunite | 
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| | Class: | Silicates | | | | | |
| | Chemistry: | (Na,K)3 Li (Fe,Mn)2 Ti2O2 (Si4O11)2 Complex Titanium Silicate | | | | | |
| | Color(s): | black, red-brown internal reflection | | | | | |
| | Hardness: | 5 - 6 | SpecGrav: | 3.19 - 3.23 | | | |
| | Fracture: | conchoidal | Cleavage: | perfect | | | |
| | Crystal: | monoclinic (sell formed long prisms are common) | | | | | |
| | Envronment: | hydrothermal replacement deposits, also in nepheline syenite pegmatites. | | | | | |
| | Association: | benitoite, aegirine, natrolite | | | | | |
| | Locals: | | USA | California, USA | Canada | Ireland | Greenland | |
| | Misc: | Named after the roman god of the sea, Neptune, because it is often found with Aegirine, and Aegirine is the Norse name for the God of the Sea. | | | | | |
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| | Photos & Locals: | | | | | | ------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | | | | 1.) San Benito County, California 2.) San Benito County, California 3.) San Benito County, California | 4.) Gem Mine, San Benito Co., Calif. 5.) Gem Mine, San Benito Co., Calif. 6.) Gem Mine, San Benito Co., Calif. | | |
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