Synthetic Fluorescent Mineral Experiment: 'Ruby Thursday' - UVb

 

FOV: 6" wide.

 

Aluminum sulfate combined with chromium oxide and heated with a MAPP gas torch until incandescent. Heated on aluminum trays on a steel plate.

 

The samples in front contain a 0.2% mol concentration of Cr to Al. The left sample in the rear contained about a 0.5% mol concentration and the right sample contained a 2.5% mol concentration.

 

The right sample in front also contains calcium and manganese from the CaAl655 forumla.

 

Suspected phosphors: Al2O3:Cr3+ and CaAl2O4:Mn4+

 

Shown under UVb light.

 

Key:

WL = White light (halogen + LED)

FL = Fluoresces

PHOS = Phosphorescent

BL = 450nm,

UVa = 368nm (LW), UVb = 311nm (MW), UVc = 254nm (SW)

'>' = "stimulated by:", '!' = "bright", '~' = "dim"

 

Jackolite2 Pb Concentration Test

24Sep2015

 

Series best viewed in Light Box mode using Right and Left arrows to navigate.

Photostream best viewed in Slideshow or Lightbox mode (in the dark).

 

18 Watt Triple Output UV lamp from Polman Minerals - Way Too Cool UV lamps

Done