South Dakota Barite on Calcite - PHOS

 

FOV: 1.5" wide

 

From Elk Creek, SD USA comes this 3" wide specimen of calcite with a gemmy barite crystal.

 

Contains:

Barite (FL+PHOS Bluish White >UVabc)

Calcite (FL Yellowish White >UVabc)

 

Shown in phosphorescent state after exposure to UVabc light.

 

Key:

WL = White light

FL = Fluoresces

PHOS = Phosporescent

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

'>' = "stimulated by:"

 

 

Obtained from Minershop

 

MSW1482

 

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

Done