CONTENTS

[The letters in parentheses preceding the titles are those used to designate the papers
for separate publication]

(A) Tungsten investigations in the Republic of Argentina, 1942–43, by

Ward C. Smith and E. M. Gonzalez-..

(B) Geology and chromite deposits of the Camagüey district, Camagüey

Province, Cuba, by Delos E. Flint, Jesus Francisco de Albear, and

Philip W. Guild..........

(C) Aluminous lateritic soil of the Republic of Haiti, by Samuel S. Goldich

and Harlan R. Bergquist - - - .

(D) Optical calcite deposits of the Republic of Mexico, by Carl Fries, Jr..

(E) Manganese deposits of the Talamantes district near Parral, Chihua-

hua, Mexico, by I. F. Wilson and V. S. Rocha..

(F) Manganese deposits of Mexico, by Parker D. Trask and José Rodrí-

guez Cabo, Jr..

ILLUSTRATIONS

Page

PLATE 1. Index map showing location of the turgsten deposits of the

Argentine Republic_ _ _

In pocket

2. Map showing claims on the Cerro Morro tungsten property. In pocket

3. Geologic and topographic map of a part of the Cerro Morro

tungsten property ---.

In pocket

4 Geologic structure sections, Cerro Morro tungsten property. In pocket

5. Geologic and topographic map of the Josefina tungsten mine. In pocket

6. Plan and projection of main adits and partly completed main

tunnel, Josefina mine..

In pocket

7. Josefina vein, Josefina mine, plan and projections of No. 1 adit

and lower drift____

In pocket

8. Josefina vein, Josefina mine, plan and projections of adits 2, 3,

4, and 5.

In pocket

9. Primera vein, Josefina mine, plan and projections___

10. Rica vein, Josefina mine, plan and projections of workings.

11. Blanca vein, Josefina mine, plan and projections of workings.

12. Sur vein main adits, Josefina mine, plan and projections. In pocket

13. Sur vein upper workings, Josefina mine, plan and projections. In pocket

14. Marchant vein, Josefina mine, plan and projection____

15. Sketch map of San Antonio tungsten mine...

In pocket

In pocket

In pocket

In pocket

In pocket

16. Plan and sections of part of the Toro workings, San Antonio

tungsten mine..

In pocket

17. Sketch map, Santo Domingo mine...

In pocket

18. Geologic map of the Camagüey chromite district, Camagüey

Province, Cuba..

In pocket