Page 12 - APPLIED INORGANIC ANALYSIS

xvi CONTENTS

PART IV. CARBONATE ROCK ANALYSIS
PAGE
I. INTRODUCTION... 819
1. Qualitative Comparison of Carbonate and Silicate Rocks.....9..,, 819
2. Mineral Composition of Carbonate Rocks......»9». ......., 821
3. Behavior toward Different Reagents as a Means ot Distinguishing Dir-
ferent Carbonates. 823
% A. Differing Solubility in Tartaric Acid, Citric Acids and in Acid 824
Potassium Sulphate...
B. Distinguishing Calcite from Aragonite. 824
C, Distinguishing between Calcite and Dolomite....-. 824
II. REFINED METHODS FOR THE ANALYSIS OF CARBONATE ROCKS. 826
1. Silicon, Its Separation from Aluminum, etc.... 826
A. Methods af Decomposing the Rock... 826
B. Separation of Silica........ 828
2. Aluminum, Total Iron, Titanium (Silica, Manganese); Precipitation in
Company with Phosphorus ... 830
A. Precipitation of Aluminum, Iron, etc.. 830
B. Treatment of the Filtrates from the Alumina, etc....». 832
C. Solutions and Separation of the Orides Obtained in A and B. 832
3. Manganese... 833
A. In the Filtrates from 2B..... 833
B. Separate Determination of Manganese... 834
4. Copper, Nickel, Cobalt, Lead, Zinc, Rare Earths, Chromium, Vanadium,
Molybdenum . 834
5. Calcium, Strontium, Barium, Magnesium (Manganese).. ....».,,, 835
A. Ordinary Procedures. ....8...,,,, 835
B. Separation of Litle Calcium from Much Magnesium-Magnesite
Analyli!.............................. 836
6. Phosphorus. 836
7. Ferrous Iron... 837
A. In the Absence of Carbonaceous Matter. 837
B. In the Presence of Insoluble Carbonaceous Matter. 838
8. Alkalies. 838
9. Carbon Dioxide, Carbon (Water). 839
A. Determination of Carbon Dioxide 839
B. Determination of Carbon and Hydrogen of Carbonaceous Matter 839
C. Simultaneous Determination of Water and of Total Carbon..... 840
10. Chlorine. . 840
11 . .F1uorine 841
12. Sulphur. . . . . . . . . . 841
A. Tests as to Condition; Determination of Sulphate Sulphur... 841
B. Determination of Total Sulphur....++++.+................. 84l
13. Water... 842
A. Hygroscopic Water. 842
B. Firmly Head Water. 843