The locality was exposed during road construction in the early 1980s. The minerals were found in amygdales in a basalt.
Ref:
-Berg, Hans-Jørgen (1985): Lommedalen. Litt historisk geologi og mineralogi fra Søndre Lommedalen. NAGS-nytt 12 (1), 4-14
Mineral List:8 entries listed. 6 valid minerals.
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