zigrasite
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Zigrasite is a phosphate mineral with the chemical formula of . Zigrasite was discovered and is only known to occur in the Dunton Quarry at Oxford County, Maine. Zigrasite was specifically found in the giant 1972 gem tourmaline-bearing pocket at the Dunton Quarry. Zigrasite is named after James Zigras who originally discovered and brought the mineral to attention.
Wikidata facts
- Image
- Zigrasiet AndreRobbemond2mm-9.jpg
Show 5 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.CE.75
- Nickel-Strunz 9th edition (updated 2009)
- 8.CE.75
- IMA Mineral Symbol
- Zig
- Commons category
- Zigrasite
- chemical formula
- MgZr(PO₄)₂·4H₂O
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Article
9 sectionsContents
- Occurrence
- Physical properties
- Crystal structure
- Chemical properties
- Chemical composition
- X-ray crystallography
- See also
- References
- External links
Zigrasite is a phosphate mineral with the chemical formula of . Zigrasite was discovered and is only known to occur in the Dunton Quarry at Oxford County, Maine. Zigrasite was specifically found in the giant 1972 gem tourmaline-bearing pocket at the Dunton Quarry. Zigrasite is named after James Zigras who originally discovered and brought the mineral to attention.
==Occurrence== Zigrasite is found in association with tourmaline, microcline, quartz, albite, beryl, amblygonite-montebrasite, childrenite-eosphorite, and apatite. It is crystallized as one of the last minerals during pocket formation. The crystals themselves were found perched on a crystal of tourmaline from the giant 1972 pocket at the Dunton Quarry. The quarry itself is located in a complex rare-element granitic pegmatite that has produced large quantities of gem tourmaline as well as many other rare phosphate species.