Zak: The need for a geochemical database specific to metamorphic petrology derives from an emphasis of single-phase spot analysis over bulk-rock chemical analysis, and paragenetic relationships between zoned metamorphic minerals in specific textural and deformational domains. Zak: HEAD Zak: EXPLODES Zak: apparently im a contributor to this paper Zak: since it discusses the interface Zak: 7TH AUTHOR BABY Zak: IM A SCIENTIST