Full resolution (JPEG) - On this page / på denna sida - VI. Mining and Metallurgical Industry. General Survey. By C. Sahlin - 1. Mining. By Valfrid Petersson
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vi. mining and metallurgical industry.
of ore-bodies, following each other, the strike-direction (malmstreck), have
for example, a length of close on 20 000 m at Norberg, of 4 000 m at
Grängesberg, 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 Gällivare there occur thicknesses of up to 100 m, and at
Ekströmsberg thicknesses of from 22 to 52 m with lengths of 1200
m. The vein at Luossavara-Kirunavara has a length of about 7 500 m,
and the vein called "Stora malmen" at Gällivare has a length of 5 000 m.
The titaniferous 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 200 m.
An index of 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.
Central Siveclen.
Grängesberg.............94 000 sq. in
Norberg..............................50 900 »
Håksberg............................44 000 »
Stråssa..............................26 400 >
Blötberget............................15 000 >
Dannemora............................12 000 »
Iviken................................12 000 >
Idkerberg............................10 000 »
Riddarhyttan........■ . . . 8 500 •
Klacka-Lerberg........................8 000 »
Ickorrbotten..........................8 000 >
Stripa................................7 500 »
Pershyttan............................6 000 »
Vintjärn..............................5 800 »
Fredmundberg........................5 500 >
Persberg..............................5 200 >
Kantorp..............................5 000 >
Nyberget..............ca. 5 000 »
Utö..................................5 000 »
Taberg..............................260 000 >
Other Mining Fields..........71 000 » yg^ sqq sq. m
Lappland.
Kirunavara.............. 436 000 sq. m
Gällivare............... 230 400 »
Svappavara............. 50 000 »
Ekströmsberg ........... 50 000 >
Leveäniemi.............. 32 000 >
Luossavara.............. 25 000 »
Tuolluvara.............. 14 800
Ruoutevare ............. 135 000 » 973 200 sq. m
Total 1 638 000 sq. m
To this total ore area falls to be added the area of the numerous ore deposits
in Sweden which for various reasons are not being worked.
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