The giant Betze gold ore body, the largest Carlin typ deposit known in the northcentral Carlin trend, Nevada is composed of individual high grade oreshoots that contain different geologic, mineralogic and textural characteristics. The orebody is typical of many structurally controlled Carlin type deposits, and is hosted in thin bedded, impure carbonate or limy siltstone, breccia bodies, and intrussive or calc silicate rock. Most ores in the Betze orebody are highly sheared and brecciated and show evidence of syndeformational hydrothermal deposition. Hydrothermal alteration is scale dependent, either in broad, pervassive alteration patterns or in areas related to various oreshoots. Alteration includes decarbonitization(~decalcification) of carbonate units, argillization(illite clay), and silicification. Patterns of alteration zoning in and surrounding the Betze orebody define a large porous dilated volume of rock where high fluid flow predominated. Local restriction of alteration to narrow illite and clay rich selvages around unaltered marble of calc silicate rock phacoids implies that fluid flow favored permeable structures and deformed zones. Gold mainly present as disseminated sub micron sized particles, commonly associated with As rich pyrite although one type of oreshoot contais micron size free gold. Oreshoots form a three dimensional zoning pattern in the orebody within a WNW striking structural zone of shearing and shear foloding, termed the Dillon deformation zone(DDN). Main types of oreshoots are;(1)rutile bearing siliceous oreshoots; (2)illite clay pyrite oreshoots; (3)realgar and orpiment bearing oreshoots; (4)stibnite bearing siliceous oreshoots; (5)polymetallic oreshoots. Ore textures, gouge. phylloitic rock, alteration style and previously documented isotopic and fluid inclusion data, all indicate a weakly to moderately saline fluid that ascended and cooled during structural displacement. Carlin type deposits are characterized by relatively uniform, low gold grades. However, recent open pit exposures in deep hypogene parts of the Betze orebody and other gold deposits in the Carlin trend suggest that some orebodies are composed of distinct high grade oreshoots that are zoned complexly in three dimensions. The giant Betze gold ore body, the largest Carlin typ deposit known in the northcentral Carlin trend, Nevada is composed of individual high grade oreshoots that contain different geologic, mineralogic and textural characteristics. The orebody is typical of many structurally controlled Carlin type deposits, and is hosted in thin bed, impure carbonate or limy siltstone, breccia bodies, and intrussive or calc silicate rock. Most ores in the Betze orebody are highly sheared and brecciated and show evidence of syndeformational hydrothermal deposition. Hydrothermal alteration is scale dependent, either in broad , pervassive alteration patterns or in areas related to various ore shoots. Alteration includes decarbonitization (~ decalcification) of carbonate units, argillization (illite clay), and silicification. Patterns of alteration zoning in and surrounding the Betze orebody define a large porous dilated volume of rock where high fluid flow predominated. Local restriction of alteration to n arrow illite and clay rich selvages around unaltered marble of calc silicate rock phacoids implies that fluid flow favored permeable structures and deformed zones. Gold mainly present as disseminated sub micron sized particles, commonly associated with As rich pyrite although one type of oreshoot contais micron size free gold. Oreshoots form a three dimensional zoning pattern in the orebody within a WNW striking structural zone of shearing and shear foloding, termed the Dillon deformation zone (DDN). Main types of oreshoots are; (1) rutile bearing siliceous oreshoots; (2) illite clay pyrite oreshoots; (3) realgar and orpiment bearing oreshoots; (4) stibnite bearing siliceous oreshoots; (5) polymetallic oreshoots. Ore textures, gouge. phylloitic rock, alteration style and previously documented isotopic and fluid inclusion data, all indicate a weakly to moderately saline fluid that ascended and cooled during structural displacement. Carlin type deposits are characterized by relHowever, recent open pit exposures in deep hypogene parts of the Betze orebody and other gold deposits in the Carlin trend suggest that some orebodies are composed of distinct high grade oreshoots that are zoned complexly in three dimensions.