V egetation Plant sampling (biogeochemistry) is an ef fective method of exploration – called the Biogeochemical Method. r oot systems of the plants collect the water which contain mineral rich nutrients. Depending on the size of the plant and particularly the size of its r oot system, this can pr ovide the geologist with a signifcant geochemical signatur e. f actors to be consider ed include collecting a single species and sampling the same part of this species in or der to compar e “apples with apples”; also the same age of plant and same time of year . V egetation sampling in some instances can r eplace soil sampling in ar eas wher e obtaining a pr oper soil sample is not possible. V egetation 34 35 i ndex Sample Preparation & Disposal Groups 1VE-MS & 1A V – Geochemical: Ultratrace Aqua Regia Digestion AcmeLabs Schedule of Services & F ees 2013 | 35