title: L022.: Lava collected on 2021-05-04 at the Fagradalsfjall eruption in Iceland
design: DNA was extracted from crushed lava using a modified DNeasy PowerMax Soil Kit protocol involving bead beating and vacuum concentration. Amplification of the 16S rRNA gene v4 region was performed with 515F/806R primers using a 35-cycle PCR, and sequencing was conducted on a MiSeq platform with dual-indexed multiplexing.