Gutunganya ibiti ni ibuye ryihariye ry’agaciro gato, rizwi kandi nka wood petrification, bivuga ihinduka ry’ibiti buhoro buhoro mu bisigazwa by’amabuye mu gihe cy’ibikorwa by’ubutaka. Ubu bwoko bw’amabuye bukunze kugira imiterere n’imiterere nk’ibiti, kandi bugumana imiterere nk’ibiti, ariko ingingo zabyo zasimbuwe burundu cyangwa igice cy’amabuye y’agaciro. Ibiti bikozwe muri petrification bishobora gucibwa, gutogoshwa no gutogoshwa kugira ngo hakorwe imitako itandukanye n’imitako nk’imikufi, impeta n’imikufi. Ibara ryabyo n’imiterere yabyo biratandukanye bitewe n’imyunyu ngugu irimo, ariko amabara asanzwe arimo umukara, umuhondo, umutuku, n’umukara.
Igiti gikozwe mu giti giteye ubwoba kivuga ku gipande kinini cy’ibikoresho bya agate cyakozwe nyuma yo gushingwa. Gihuza imiterere y’ibiti n’amabuye ya agate, hamwe n’imiterere n’amabara byihariye. Ibiti bya agate bikozwe mu giti bikunze gukoreshwa mu mitako y’imbere no mu bikoresho by’ubwubatsi, kandi bishobora gukoreshwa mu gukora amakaramu, inkuta, hasi, nibindi.
Mu guhitamo icyuma gikozwe mu giti gifite imiterere y’igiti, ugomba kwitondera ingingo zikurikira:
1. Hitamo umucuruzi usanzwe w’amabuye cyangwa isoko ry’ibikoresho by’imitako byabigize umwuga kugira ngo urebe ko ibicuruzwa bifite ireme kandi ari iby’ukuri.
2. Witondere kureba niba imiterere n'amabara by'ibice by'ibiti bya agate ari bimwe kandi bisanzwe, kandi wirinde ko hagira icyuho, ibisembwa cyangwa itandukaniro ry'amabara.
3. Tekereza niba ingano n'ubugari bw'icyuma cya agate gifite lignified bikwiranye n'umushinga wo gushariza wifuza.
4. Mu gushyiraho no gukoresha slabs za agate zifite ubuziranenge, ni ngombwa gukurikiza ibisabwa n'umwuga mu bwubatsi no kubungabunga kugira ngo ubwiza n'imikorere byazo birambe.
Muri make, icyuma gikozwe mu giti giteye ubwoba ni ibikoresho byiza cyane kandi biranga imiterere y'imbere, bikaba bikwiye mu mitako itandukanye y'imbere no mu miterere y'inyubako.
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