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SECTION IV.— MINERALS, — Continued. 
Sub-Section I. —-Minerals which are either the components of rocks 
OR ARE FOUND EMBEDDED IN THEM, — Continued, 
134 Cal cite enclosing green-eartli, a variety which has been 
called Hislopite. India. 
135 Do. stalagmitic. Derbyshire. 
136 Do. a stalactite. Do. 
137 Aragonite or Prismatic Carbonate of Lime, 
coralloidal variety. Near Matlock, Derbyshire. 
138 Do. polished variety called Algerian Onyx. Algeria. 
139 Selenite from the London Clay, 
a large twinned crystal. 
140 Fibrous Gypsum. 
N ott iughamshire. 
141 Alabaster, massive variety of gypsum. 
Derbyshire. 
142 Fluor Spar (fluoride of calcium) in cubes 
with calcite and brown-spar. 
Alston, Cumberland. 
143 Do. with galena, and small crystals of 
iron 
pyrites and blende. 
Do. Do. 
144 Do. with oxide of iron. 
Weardale, Durham. 
145 Do. in pale coloured crystals 
with blende and quartz. 
Alston, Cumberland. 
146 Do. massive. 
Rottleberode, Hartz. 
147 Do. crystalline-massive with 
barytes and galena. 
Derbyshire. 
148 Phosphorite (variety of apatite). 
Estramadura, Spain. 
149 Dolomite with iron pyrites on quartz, 
and fluor spar. Near Tavistock,- Devonshire. 
150 Do. var. called pearl-spar on quartz. Alston, Cumberland. 
151 Magnesite (carbonate of magnesia) 
on serpentine. Hoboken, New Jersey, U. S. A. 
