MINERALS OF THE MIDLANDS. 



259 



Great Britain ;" Mammatt's " Geological Facts ;" White's " Leicester- 

 shire;" Harrison's "Geology of Leicestershire and Rutland;" 

 Page's " Economic Geology," p. 206. 



NORTHAMPTONSHIRE. 

 Mr. Thomas Beesley, F.C.S., has sent me the following list : — 



Minerals occurring in the Neighbourhood of Banbury (Oxfordshire 



and Northamptonshire.) 



In Middle and Upper Lias clays and marls. 



With Blende in the middle of calcareous clay- 

 stone concretions in ditto. 



In the same clays and marls : especially fine 

 in the Upper Lias of Milcomb Hill and 

 Hooknorton (railway cutting). 



In limestone (joints, etc). 



Lignite 

 Baryte 



Gypsum, var. Selenite. 



Calcite 



,, var. Calcareous 

 Tufa. 



,, var. Lac Lunse 

 Websterite 



In Oolite clays derived from fossil shells. 



A subsulpbate of Aluminium, deposited from 



aluminous springs arising in the Lias clays. 



(See paper by me in " Pharmaceutical 



Journal," 1st series, Vol. IX., p. 452). 



Pyrite . . .. .. In the clays and marls; often filling fossil shells. 



,, var. Marcasite The same. 

 Limonite . . In the marlstones and marls, as well as in the 



sandy beds of the Inferior Oolite, wbere it 

 seems to have replaced Pyrite. 



var. Yellow 

 Ochre 



var. Bog 

 Ore.. 



Iron 



In joints at the top of the " marlstone," 

 washed in from the Upper Lias. 



and close to the Great 

 , Twyford, three miles 

 It enclosed some 

 parently Anglo-Saxon. 

 e pommel of a sword- 

 a bit of iron ; and the 

 i Ibuted to the lump of 



Glauconite 



Vivianite 



Manganese oxide 



A large lump w 

 Western Railv 

 south of Br 

 bronze artic' 

 One was probi 

 hilt, as it coi 

 blade may he 

 oxide. 



The green grai b if the "marlstone"— 

 possibly casts c ei :omostracans. 



Bright blue granules lisseminatediu the lower 

 marly clay of t! e Margaritatus zone ; found 

 in making a sewer near my house in the 

 High Street, Banbury. Not far from it 

 were many old bones, probably buried 

 centuries ago. 



Small black grains, disseminated in a thin 

 sandy Limestone, which here, as in 

 Normandv. is a passage-bed from the 

 Spinatus'Zone to the Upper Lias. They 

 are most plentiful in the interior of fossil 

 shells, and give quite a grey tint to the 

 otherwise cream-coloured mass. It may- 

 be an impure psilonulane. 



