is I 



Till. MINERALS OF THE MIDLANDS. 



Fluorides. 



Fluor Spar 



var. Blue John 

 var. Earthy 



Oxides. 



Limonitc 



Haematite 



Magnetite 



Lead Matlockite 

 (oxv - chloride 

 of Pb) 



Manganese, Wad. 



i a vision in. 

 Compounds of the Halogen Elements. 



(■Common in the veins in Lime-] 

 stone. Colours, white, yellow, - 



( blue, &c j 



I Concretionary nodules and veins ) 

 ( in Limestone . . . . . . )' 



Dark blue, very small crystals. . 



DIVISION IV. 



Compounds of Oxygen. 



. - In the Limestone tract . . . . j 



(In Toadstone, occasionally in \ 

 Limestone. Generally present | 

 as a stain in the grits, sand- [ 



Quartz . . 



Chalcedony 

 Jasper . . 



Chert . . 



Flint . . 



Carbonates. 



Aragonite 



Calcite . . 



Calc Tuff 

 Stalactitic 



Chalj bite 



Malachite 



Matlock, Castle- 

 ton, Winster, 

 Ashover, &c. 



Castleton. 



Cromford, &c. 



[ stone, &c. .. .. . . ) 



In the Toadstone (Dolerite.) ' 

 Always present . . . . . . 1 



Common. Earthy. Often as ' 

 Dendritic stains . . . . 1 



/Crystals. Occasionally large iin 



Toadstone; also found in the' 



Carh. Limestone. Present as - 



pebbles and grains in sands, 1 



I grits, shales, clay, &c. . . I 



Occasionally in Toadstone 



Ditto 



( Common in the Carb. Lime- j 

 ) stone . . . . . . . . | 



In the Drift Gravels 



f ( 



I 1 



/Common as veins in Limostone\ 

 district, often hnely crystal- 

 lised, and in the Dolerites as \ 

 a secondary product, and in 

 cavities in Clay Ironstone 

 nodules 



| Common about springs in Lime- 



| stone districts 



In Caves . . . . . . 



Common in Coal Measures as] 

 Claj Ironstone, concretionary I 

 QOdoles and hands, sometimes j 

 sparry; also in Limestone ..j 



Earthy, and stains . . 



Ashover, Stoney 

 Middletou, &c. 



Matlock, 



Ashover, 



Castleton, 



Miller's Dale, etc. 



Matlock, Ash over, 

 Miller's Dale, 

 Winster, &c. 



Cromford. 



Matlock, Win- 

 ster, Tideswell, 

 Harrington, <fcc. 



Matlock, Buxton, 

 Ashover, 

 Castleton, 

 Kinderscout, 

 Derby, &c.,&c. 



Matlock. 



Matlock, &c. 



General. 



S. Derbyshire. 



Matlock, Ash- 

 over, Ch ell aston. 



Matlock, 

 Ashover, 

 ( 'astleton. 

 Miller's Dale, 

 &c, &c. 



Matlock, 

 Miller's Dale, &c. 

 Matlock, 

 Castleton. 



E. Derbyshire, 

 Matlock, <fec. 



Matlock, 

 Middleton, cfec. 



