GRADE AND TONNAGE MODEL OF SEDIMENTARY Mn

By Dan L. Mosier

DATA REFERENCES Most data from DeYoung and others (1984).

COMMENTS Because available grade and tonnage estimates represent mines from, in some cases, very extensive deposits and because the numbers are calculated at differing cutoff grades, the endowment of these deposits is undoubtedly much larger than indicated in these figures. See figs. 176-177.

Figure 176. Tonnages of sedimentary Mn deposits.

Figure 177. Metal grades of sedimentary Mn deposits. A, Manganese. B, Phosphorus.

DEPOSITS

Name Country

Akviran TRKY

Andhra Pradesh INDA

Ansongo MALI

Azul-Carajas BRZL

Bolske-Tokmak URRS

Chiatura URRS

Chiwefwe ZIMB

Groote Eylandt AUNT

Gujarat INDA

Horseshoe AUWA

Hsiangtan CINA

Imini MRCO

Istranca TRKY

Kalahari SAFR

Kamenskoe URRS

Kaochiao CINA

Madhya Pradesh INDA

Manuel Killigrews CNNF

Matese-Ciociaria ITLY

Molango MXCO

Morro da Mina BRZL

Naniango UVOL

Nikolaevskoe URRS

Nikopol URRS

Nizne-Udinskaja URRS

Otjosondu SAFR

Ravensthorpe AUWA

Seiba URRS

Shimoga (Karnatoka) INDA

Timna ISRL

Uracum BRZL

Urkut HUNG

Usinsk URRS

Varna BULG

Wafangtzu CINA