The town lies on the
Bruce Highway, north west of the city of
Rockhampton. The town is a small service centre for the surrounding area, and one of a number of fuelling points on an otherwise isolated stretch of highway. To the south lies the Kunwarara
Magnesite mine, which works one of the world's largest supplies of the mineral. Marlborough is famous for producing the world's finest
chrysoprase, a semi-precious gem once coveted by
Alexander the Great and
Cleopatra. The small but high-grade deposit is located about south-south-west of the township and is universally regarded as the most valuable find in the world. The
Bruce Highway passes through the locality, entering from the east (
Kunwarara) and exiting to the north-west (
Ogmore), bypassing the town approx to the west. The
North Coast railway line also passes through the locality, running roughly parallel to the east of the highway, but does pass through the town, which is served by
Marlborough railway station (). The
Marlborough–Sarina Road exits to the west. == History ==