The National Collection of onshore (landward) borehole samples material from over 15 000 boreholes including over 200 km of drillcore over 22 km of drillcore drilled for Nirex plc the official DTI repository for drillcore, cuttings and samples from 'landward' hydrocarbon wells.
Search the: Onshore borehole material database
The UK Continental Shelf (offshore) hydrocarbon well collection contains materal from approximately 8000 wells, including over 300 km of drillcore and 4.5 million samples of cuttings.
Search the Offshore Hydrocarbons wells database (including images)
The foremost UK biostratigraphical collection, with over three million specimens.
Many type, figured and cited fossils, plus representative reference examples.
Individual collections from most fossiliferous localities across Britain; a comprehensive micro-palaeontological slide collection, including many samples from boreholes and important donated material, such as the John Smith & Kidston collections.
Search the Onshore borehole material database
Search the PalaeoSaurus collections database
Offshore samples from the UK continental shelf and elsewhere, including:

The major collection of British rocks and thin sections· National Reference Collection (approximately 200 000 thin sections and hand specimens from most major rock units).
Search the mineralogy and petrology collection database
A variety of materials, mostly held as processed samples, collected primarily for geochemical analysis: