Scheikundige formule: Na3Sr(PO4)(CO3)
Familie: Carbonaten
Status: IMA-A
Kristal Systeem: Monoklieniek
Mineraal om tentoon te stellen: Nee
UV Type | Kleur | Intensiteit | Frequentie van de observatie |
---|---|---|---|
Korte Golven(254 nm): | Groen | ||
Andere kleuren korte golven: | Geel groen , |
This is another rare mineral from the rare mineral district of the Khibiny mountains, Kola Peninsula, Russia. It is found as small grains to about 1mm associated with potassium feldspar, nepheline, sodalite, aegirine (main rock-forming minerals), plus pectolite, astrophyllite, barytolamprophyllite, shcherbakovite, vuonnemite, kazakovite, ershovite, chkalovite, natrite, villiaumite, and rasvumite. The name is for Scottish chemist A. Crawford (1748- 1795), who discovered the Sr salts. Type material is at the Fersman Mineralogical Museum, Moscow, Russia In his book, Jack de Ment spoke about crawfordite as a form of chalcedony from Barstow, California, fluorescing in green under SW;
Crawfordite fluoresces bright yellowish green, band not stated.
(*)Gegevens zijn niet exhaustieve, ze zijn beperkt tot de meest belangrijke plaatsen voor fluorescentie
http://www.mindat.org/show.php?name=Crawfordite
http://webmineral.com/data/Crawfordite.shtml
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