of ore-bodies, following each other, the strike-direction (malmstreck) , have
for example, a length of close on 2 0 0 0 0 m at Norberg, of 4 000 m at Gran-
gesberg, of 3 500 m at Riddarhyttan, and of 2 000 m at Dannemora.
The ore deposits of Lappland, as a rule, have larger dimensions than
those of Central Sweden. Thus the ore deposit at Kirunavara has a thickness
of from 20 to 196 m or on an average 50 m along with a length of
3 000 m; at Gallivare there occur thicknesses of up to 1 0 0 m, and at
Ekstromsberg thicknesses of from 22 to 52 m with lengths of 1 200
m. The vein at Luossavara-Kirunavara has a length of about 7 500 m,
and the vein called “ Stora malmen” at Gallivare has a length of 5 000 m.
The fitaniferous ore deposits are somewhat irregular in their occurrence:
out of the two above-named deposits of this kind the Taberg ore
deposit has a length of 900 m and a breadth of 360 m, and Ruoutevare
has a length of about 1 600 m and an average breadth of about 2 0 0 m.
An index o f the size of the various ore deposits is afforded by the
“ ore area” (malmarea), that is the size of the horizontal section of the
ore body. The subjoined figures give the ore area of the biggest Swedish
ore deposits according to the latest investigations.
Grangesberg . . . .
Central Sweden.
................................ 94 000 sq. m
Norberg.................... .................................. 50 900 »
H§.ksberg . . . . . . . . . . . . . . 44 000 11 »
Str&ssa.................... ................................ 26 400 ¡PPP!
Blbtberget . . . . . ................................ 15 000 »
Dannemora................ ................................ 12 000 »
Iviken........................ ................................ 12 000 >
Idkerberg................ ................................ 10 000 » -
Riddarhyttan . . . ................- . . . 8 500 »
Klacka-Lerberg . . . ................................ 8 000 I
Ickorrbotten^ . . . . ................................ 8 000 »
Stripa........................ ................................ 7 500 i
Pershyttan................ ................................ 6 000 : ; ■»
Vintj&rn.................... ................................ 5800 »
Fredmundberg . . . ................................ 5 500
Persberg.................... ................................ 5 200 1
Kantorp.................... ................................ 5 000 »
Nyberget.................... ............................ca. 5 000 5
Uto . . .................... . . . . . ■ . . 5 000 »
Taberg . . . . . ....................■ . . ” 260000 »
Other Mining Fields ................: . . . 71000 »
Kirunavara................
Lappland.
................................ 436 000 sq. m
Gallivare.................... ................................ 230400 »
Svappavara . . . . ................................ 50000 i s i »
Ekstromsberg . . ................................ 50 000
Leveaniemi . . . . . ................................ 32 000 s>
Lhossavara . . . . . . . : .................... 25 000 >
Tuolluvara................
Ruoutevare . . . . ................................ 135 000 »
Total 1638 000 sq.m
To this total ore area falls to be added the area of the n um e ro u s ore deposits
in Sweden which for various reasons are not being worked.
Mill. tons.
7
Iron Ore Output in Sweden.
Tear 1871 1875
T able 43.
1880 . 1885 1890 1895 1900
Sweden's Supplies o f Iron Ore.
Lump ore Concentrating
ore
Equivalent
concentrate
Total of Lump
ore and
concentrate
Central Sweden. tons tons tons tons
Ores with less than O'01 % of phosphorus
...........................................
Ores with O'Ol—0'06 % of phosphorus
...........................................
Ores with more than O'06 % of phosphorus
............................................
19 400 000
11500 000
59 300 000
45 500 000
6100 000
2 000 000
28 000 000
2 900000
1200 000
47 400 000
14400000
60 500 000
90 200 000 58 600 000 32100000 122300000
Reserves of unperfectly known deposits
. . . . . . . . . . . . .
Titaniferous ore (Taberg) . . . .
40 00 )000
50 000 000 15000 000
(40 000 000)
15 000000
Lappland.
Worked mining fields:
Kirunavara and Luossavara . .
Tuolluvara....................................
Gallivare.......................................
758000 000
7 000 000
270 000000
■ h ,
1035 000 000
Svappavara........................................
Leveaniemi ........................................
Ekstromsberg...................................
Mertainen ........................................
30 000 000
30 000 000
50 000 000
5 000 000 115 000 000
Titaniferous ore (Ruoutevare) . . 8 000 000 8000000
Total tons 1335 300 000