

TABLE Ojf' CONTENTS. 



Chap. 1.— General Characteristics 



of Minerals, 



13 



Chap. II. — Crystallography : or the Structure of Minerals, 



19 



Fundamental forms of crystals, 



. • . 



23 



Cleavage, ■ . 



• • 



33 



Secondary forms, 



. • • 



34 



Compound crystals, . . 



• • • 



42 



Dimorphism, 



• • • 



44 



Irregularities of crystals, 



. • • 



45 



Measuring angles of crystals, 



< • • 



4? 



Massive minerals, 



• • • 



52 



Columnar structure, 





52 



Lamellar and granular structure, . • 



53 



Pseudomorphous crystals. 





54 



Chap. III. — Physical Properties of 



Minerals. 





Luster, 





55 



Color, 





56 



Diaphaneity, — Refraction, and Polarization, 



58 



Phosphorescence, 





61 



Electricity and Magnetism, . 





62 



Specific gravity, 



. . 



63 



Hardness, 



. . « 



64 



r ■ 'f of aggregation — Fracture, 



• • 



65 



a iste -Odor. 





66 



Chap. IV. — Chemical Properties of 



Minerals, 



66 



Action of acids, 



. # 



. 66 



Blowpipe, 



i 



67 



Chap. V. — Classification of Minerals, • • 



7i 



Chap. VI. — Description of Minerals, . • • 



76 



1. Gases, 



• 



76 



2. Water, . 



• • 



78 



3. Carbon and compounds of carbon, • . 



80 



A, Sulphur, . 



• • • 



97 



5. Haloid minerals, . 





• • • 



. 100 



1. Ammonia, . 





• t • 



. 100 



2. Potassa, 





• • e 



. 101 



3. Soda, 





• • * 



. 102 



4. Baryta, 





• • • 



. 108 



5. Strontia, 





• a • 



. 110 



6. Lime, 





• ■ 



. 112 



7. Magnesia 





• • • 



. 123 



8. Alumina, 





♦ • • 



. 127 



