Mineralogy and Blowpipe Analysis.

1. Define (a) lustre, (b) streak, (c) tenacity, (d) botryoidal, (e) öolitic, (f) crystal aggregate.

2. Identify the crystal forms in the models submitted, a, b, c, d.

3. Describe the mineral specimens (a) arsenopyrite, (b) haematite, (c) sphalerite.

4. Determine by field tests the samples submitted, e, k, x, y.

5. Name (1) three minerals with hardness between 2 and 3.

(2) three minerals with specific gravity about 4. (3) six prominent rock-forming minerals.

(4) three "accessory" minerals in rocks.

6. Give the prominent ores of copper, stating composition, classification, and simple methods of detecting them.

7. Show, making use of diagrams, the differences between the oxidising and reducing flames, and give examples showing the action of these flames on minerals.

can.

8. Give as many blowpipe reactions for arsenic as you

9. Give the reactions that may occur in the examination of minerals by the open tube or roasting test.

10. How would you distinguish, by means of the blowpipe, between (a) potassium and lithium, (b) lead and bismuth, (c) antimony and arsenic, (d) tin and zine, (e) phosphoric acid and boracic acid.

11. Explain the use of phosphor salt in detecting silica in minerals.

12. Determine the numbered specimens by means of the blowpipe.

1. What constitutes calcite a mineral species? 2. What is meant by physical mineralogy?

3. Explain, with examples, what is meant by (a) cleavage forms, (b) paramorphs, (c) amorphous state, (d) the law of the constancy of interfacial angle, (e) crystalline aggregate, (f) optic axis, (g) axes of elasticity, (h) diath

ermancy.

4. What evidence is there to prove that crystals grow? 5. Describe fully the specimen submitted.

6. Give, with examples, the various cleavages of the orthorhombic system.

7. Write notes on etching figures.

8. Write notes on electrical properties of minerals.

Descriptive Mineralogy.

1. Give the mineral species belonging to (1) the gold group, sub-class metals, (2) the mica group, (3) the apa

tite group.

2. Account for the names-(a) garnet, (b) pyroxene, (c) zeolite, (d) molybdenite, (e) dolomite.

3. Describe the species (a) native silver, (b) stibnite, (c) galenite, (d) tetrahedrite, (e) spinel, (f) siderite, (g) orthoclase, (h) enstatite, (i) barite, (j) scheelite.

4. Give (1) the composition of (a) altaite, (b) pentlandite, (c) bornite, (d) kermesite, (e) jamesonite, (ƒ) periclase. (2) The crystal system and habit of―(g) chalcopyrite, (h) tourmaline, (i) chabazite, (j) staurolite, (k) horacite, (1) anhydrite.

5. Discuss the general characters, such as composition, form, &c., of the members of the pyrite group.

6. Give the blowpipe characteristics of (a) argentite, (b) miargyrite, (c) sal-ammoniac, (d) cuprite, (e) ilmenite, (f) witherite, (g) titanite, (h) apatite, (i) celestite.

7. Write notes on the occurrence of the following :— (a) sphalerite, (b) limonite, (c) fluorite, (d) analcite, (e) ulexite, (f) halite, (g) serpentine.

8. Give Canadian localities for the following:-(a) sulphur, (b) copper, (c) chalcocite, (d) millerite, (e) sylvanite, (f) bournonite, (g) chromite, (h) wollastonite, (i) beryl, (j) vesuvianite, (k) datolite, () stilbite.