Knowledge

03 — Knowledge

What the mountain yields

Silver, lead, copper, zinc — and a little gold. What lies in the rock here, which rocks make up the mountain, and the stories that surround them.

The ores

What was mined

The greatest value did not lie in silver itself but in galena: one tonne of it yielded three to six kilos of silver. Chalcopyrite gave considerably less, 0.4 to 1.7 kilos per tonne. Gold occurred too, but finely dispersed in pyrite and sphalerite, above all in the Kreuz, Elisabeth and Nikolaus adits.

Copper-green mineral colours on the rock
Copper green on the rock — traces of the ores
Main yield

Galena

Lead sulphide, with a silvery metallic lustre

3 to 6 kg of silver per tonne

The actual reason why people dug here

Secondary yield

Chalcopyrite

Brass yellow, often iridescently tarnished

0.4 to 1.7 kg of silver per tonne

Supplied mainly copper

Rare

Gold

Finely dispersed in pyrite and sphalerite

Kreuz, Elisabeth and Nikolaus adits

Never in nuggets, always bound up in the rock

The rock

Geology

The mountain is not made of a single piece. Four rock zones meet here, and the ore veins sit exactly at the transitions.

Dripstone and sinter formations in the adit
Water keeps working — sinter in the adit
Rocks

Four zones

Brixen quartz phyllite — mica schist, finely foliated

Klausenite — a diorite, dark and massive

Feldstein — the zone in which most of the stopes lie

Quartz mica schist — in the eastern part

Ore veins

Footwall, middle, hanging wall

Three veins run through the deposit.

Down as far as the Georg adit, only the footwall vein is of economic importance.

Only at depth do the middle and hanging-wall veins develop.

They are displaced by thrust and overthrust planes — the miners simply called them walls.

Mineral cabinet

Eight pieces

A small selection of what was found inside the mountain. The collection can be seen in the museum.

M — 01

Galena

PbS

Cubic, lead grey, with mirror-like cleavage faces. The silver carrier of the district.

M — 02

Chalcopyrite

CuFeS₂

Brass yellow, often iridescently tarnished. Supplied copper and some silver.

M — 03

Sphalerite (zinc blende)

ZnS

Brown to black, with a resinous lustre. Carries finely dispersed gold.

M — 04

Pyrite

FeS₂

Fool’s gold. Cubes with striated faces, often gold-bearing.

M — 05

Quartz

SiO₂

The vein material in which the ores sit. Milky to clear.

M — 06

Siderite

FeCO₃

Iron spar, light brown, rhombohedral. A frequent companion of the veins.

M — 07

Tetrahedrite

(Cu,Fe)₁₂Sb₄S₁₃

Grey-black and unremarkable — but it can contain a great deal of silver.

M — 08

Malachite

Cu₂CO₃(OH)₂

Bright green. Forms where copper ore weathers in the air.

Wooden trough with lumps of ore from the mine
Find — wooden trough with lumps of ore
Copper-green and rust-red mineral colours on the rock
Mineral colours in the rock — copper and iron

Formulas and identifications still have to be checked against the association’s collection.

Over 75 mineral species

The complete list

Over 75 mineral species have been recorded in the adit network. The miners had their own names for some of them: black sphalerite speckled with chalcopyrite was called Tattermannl-Erz, after the fire salamander.

Elements

Gold · Graphite · Copper · Sulphur · Silver

Sulphides, selenides, tellurides

Acanthite · Stibnite · Argentite · Arsenopyrite · Bismuthinite · Boulangerite · Bournonite · Chalcopyrite · Chalcocite · Covellite · Cubanite · Dyscrasite · Freibergite · Galena · Gudmundite · Heteromorphite · Jamesonite · Marcasite · Molybdenite · Polybasite · Pyrargyrite · Pyrite · Pyrrhotite · Sphalerite · Stephanite · Tetrahedrite · Valleriite

Halides

Fluorite

Oxides and hydroxides

Anatase · Cuprite · Goethite · Hematite · Ilmenite · Limonite · Magnetite · Manganomelane · Pleonaste · Pyrolusite · Quartz · Rutile · Spinel

Carbonates

Aragonite · Aurichalcite · Azurite · Brianyoungite · Calcite · Chalcophanite · Cerussite · Dolomite · Hydrozincite · Malachite · Siderite · Smithsonite

Sulphates

Alunite · Anglesite · Anhydrite · Baryte · Beudantite · Brochantite · Chalcanthite · Celestine · Cyanotrichite · Gypsum · Glaucokerinite · Carphosiderite · Langite · Linarite · Melanterite · Namuwite · Natroalunite · Nickelalumite · Plumbojarosite · Posnjakite · Ramsbeckite · Schulenbergite · Serpierite · Siderotil · Woodwardite · Wroewolfeite

Phosphates and arsenates

Apatite · Erythrite · Mimetite · Pitticite · Scorodite · Turquoise

Silicates

Adularia · Albite · Allophane · Andalusite · Apophyllite · Augite · Axinite · Biotite · Chabazite · Chlorite · Chrysocolla · Cordierite · Datolite · Delessite · Diallage · Dravite · Enstatite · Epidote · Garnet · Hedenbergite · Hemimorphite · Hornblende · Hypersthene · Kaolinite · Clinochlore · Corundum · Microcline · Muscovite · Oligoclase · Orthoclase · Pectolite · Plagioclase · Prehnite · Ripidolite · Schorl · Stilbite · Titanite · Tremolite · Tourmaline · Wollastonite · Zircon

List taken over from the old website — to be checked against the association’s collection before launch.

Three stories from the mountain

Some reading
Story 01

Why the miners needed Saint Barbara

Miners worked in the dark, under tonnes of rock, with open flames and without any rescue service. Saint Barbara became their patron — legend has it that a rock closed in front of her as she fled from her father, giving her shelter.

On 4 December, her name day, no one went underground. People celebrated instead. That tradition outlived the end of mining: the Barbara celebration still takes place in Villanders today.

Story 02

Goldenschön and the blue Norgg

The Norgg is a dwarf from the legends of the Eisack Valley — sometimes helpful, sometimes malicious, always there where people push into the mountain. The blue Norgg is said to have lived in the Pfunderer Berg district, and anyone who treated him well was shown where the ore was rich.

Anyone who angered him found nothing more. That was how miners explained why a vein suddenly went barren. Today one of the hiking trails on the mountain carries this name.

Story 03

Hammer and chisel

Before there was explosive, progress came millimetre by millimetre: one miner held the iron — a chisel — against the rock, the other struck it with the hammer. After every blow the iron was turned a little further.

One metre of tunnel a year counted as a good performance. Anyone who sees the hand-cut side adits in the Elisabeth adit today can work out how many years are locked into these walls. The crossed tools became the symbol of mining — and are still in the association’s logo today.

Sixteen adits

Elevations and lengths

The higher workings are the older ones. Work moved through the mountain at decreasing elevation — a peculiarity that the specialist literature expressly highlights.

Older workings, cut with hammer and chisel

AditElevationLength
Fundgrube1436 m50 m
Heilig Kreuz1431 m60 m
Lorenz (visitor adit)1368 m1.240 m
Elisabeth (visitor adit)1300 m1.670 m
Georg1254 m1.270 m
Matthias1227 m1.670 m
Martin1186 m1.100 m
Nikolaus1177 m1.120 m
Andreas1159 m600 m
Barbara1133 m1.450 m

Later workings, driven with black powder

AditElevationLength
Kassian1078 m1.320 m
Katharina1025 m1.800 m
Theresia965 m1.650 m
Franz (formerly Maximilian)915 m650 m
Vittorio (Victor Emmanuel)884 m250 m
Hischlegg843 m160 m

Elevations according to the association’s board, lengths according to the old mine list. Together around 25 kilometres of tunnel.

Two things that explain the mountain

Geology
The miners’ problem

Cross faults

Ore veins vanished in the middle of a drive. Cross displacements in the rock shifted them by metres, and nobody knew where. That is why the adit network is so full of turns: people were searching for the vein again.

Higher and older

The Seeberg district

On the Villanders alpine pasture, at 2,050 metres, lies the highest district — probably older than the mine itself. There you find a prehistoric smelting site, walled adit entrances and waste heaps. The stream flowing down from the three mountain lakes is still called Knappenbach today.

Further reading

Literature

Pošepný, F. (1880): Die Erzlagerstätten am Pfundererberg bei Klausen in Tirol. Archiv für practische Geologie 1, 441–487.

Schnorrer, G. / Verant, K. (1998): Der Bergbau am Pfunderer Berg bei Klausen in Südtirol und seine Minerale. Lapis 23 (2), 13–30.

Exel, R. (1998): Lagerstättenkundliche und montanhistorische Erhebungen über den Erzbergbau in Südtirol. Ber. Geol. Bundesanst. 42.

Mair, V. (1996): Die Kupferbergbaue von Stilfs, Eyrs und Klausen. Der Stoansucher 10 (1), 38–44.

Andergassen, L.: Kirchen in Villanders.

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