#bohmite

[wigmund]

From Mindat.Org Photo Of The Day; January 28, 2018:

Berborite: Be2BO3(OH)·H2O; Böhmite: AlO(OH); Natrolite (Var: Spreustein): Na2(Si3Al2)O10·2H2O

Locality: Johs Nilsens Quarry (Johs. Nilsen Vevja Quarry), Tvedalen, Larvik, Vestfold, Norway

“Colourless berborite xls on natrolite var. spreustein and pale yellow böhmite xls. In Coll. M. Slama (ex Coll. Peter Andresen, collected by Jens Andreas Larsen) Canon EOS 600D with Canon MP-E 65mm f/2.8 1-5x, stacked from 22 Images using Zerene Stacker (Dmap)” Martin Slama