 Ramba uchinyora ndima iyi - Helenite, inozivikanwawo seMount St. Helens obsidian, emerald obsidianite, uye ruby obsidianite, igirazi rakagadzirwa nevanhu rakagadzirwa neguruva rematombo anoputika anobva muMount St. Helens uye rinotengeswa sedombo rinokosha. Helenite yakatanga kugadzirwa netsaona pashure pokuputika kweGomo reSt. Helens muna 1980. Vashandi veWeyerhaeuser Timber Company vakanga vachiedza kununura midziyo yakakuvadzwa pashure pokuputika kwegomo. Vachishandisa marambi eacetylene, vakacherechedza kuti kupisa kukuru kwainyungudutsa madota uye matombo omugomo aiva pedyo ndokuzvichinja kuva zvitema. Silica, aruminiyamu, simbi, uye zviduku zvechromium nemhangura zviripo mumatombo nemadota munzvimbo yacho, zvakasanganiswa nokupisa kwemarimi, zvakashandura zvikamu zvegomo rinoputika kuva chinhu chaizogadzirwazve somutengesi sehelenite. 