Scheikundige formule:Zie HAUYNE
Familie: Steen
Status:
Mineraal om tentoon te stellen: Nee
UV Type | Kleur | Intensiteit | Frequentie van de observatie |
---|---|---|---|
Lange Golven (365nm): | Bruin oranje | Korte Golven(254 nm): | Blauw |
Andere kleuren lange golven: | Gelig wit , Oranje , Bruin , | ||
Andere kleuren korte golven: | Violet roos , |
A metamorphic rock having lazurite as an essential component. The name Lapis Lazuli has been used both to describe the blue mineral previously known as lazurite (but in most cases is actually a Sulphur-rich variety of Hauyne) and the rock that is made up predominantly of this mineral plus calcite, pyrite and other minerals. (mindat.org) Because lapis is a rock, the fluorescence depends highly of the minerals present and can be very different from sample to sample. LW: lazurite(?): light blue, calcite: pinkisch. SW: fluorescence of different minerals from the sodalite group and or afghanite. Lazurite of Ovalle Chile said to be thermoluminescente and phosphorescente by De Ment (associated calcite?) (see bibliography)
(*)Gegevens zijn niet exhaustieve, ze zijn beperkt tot de meest belangrijke plaatsen voor fluorescentie
Images:
http://www.mindat.org/show.php?name=Lapis-lazuli
http://webmineral.com/data/Lapis-lazuli.shtml
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