Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.

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	*Smith, D. B., Francis, E. A. (1967) Geology of the Country between Durham and West Hartlepool. Memoirs of the Geological Survey. Institute of Geological Sciences*	Report (issue)
	dolomite, Black Halls Rocks 60s. net LIBRARY \|COUNTY Digitized by the Internet Archive in 2023 with... partings and stylolites. 845 ft, Hartlepool Lighthouse Bore. x 1-4. Specimen No. YG 4786 (MLD 803) ...This district (Fig. 1) lies entirely within the County of Durham and includes the south-eastern part of... ta On NEWCASTLE 46 ©} SUNDERLAND North eo COUNTY — by : oa Wolsingham 54 HARTLEPOOL a oe...university. It remains the administrative capital of the county, and supports several light industries, which are
	Whittaker, A., Green, G. W. (1983) Geology of the country around Weston-super-Mare - Memoir for 1:50 000 geological sheet 279, New Series, with parts of sheets 263 and 295. Geological Survey of Great Britain, London.	Book
	Lower Lias beds of the Kilve Lilstock-Hinkley Point areas 75 Contours on the base of the drift deposits...Weston-super Mare 99 22 Structural map of the Hinkley Point area 103 23 Sketch-map showing the offshore geology...Stringston Whittaker, Edmonds ST 24 NW Hinkley Point Whittaker ST 24 NE Fenning Island Whittaker ST 24...1973) in saline lacustrine environ ments in the USA, where K-feldspar deposits were th e ultimate product...round the coast in a clockwise direction from this point. The description of the volcanic rocks ['exposure

Baryte from Lighthouse Point, Marquette, Marquette County, Michigan, USA

Baryte from
Lighthouse Point, Marquette, Marquette County, Michigan, USA