World Distribution of Uranium and Thorium Deposits (UDEPO)

Germany: Niederschlema-Alberoda Ore Field

General Information

255

Deposit Id

Germany

Country

Saxony

Political Province

Niederschlema-Alberoda Ore Field

Deposit Name

Synonym Names

District

Site Type

1946

Year of Discovery

7/6/2026

Modified On

LIUYANT

Modified By

Not Applicable

Deposit associated with Nuclear Fuel Cycle Facilities Database

Deposit is mentioned in Red Book

General Remark

Resource Information

Depleted

Deposit Status

Granite-related

Deposit Type

Perigranitic

Deposit Sub Type

Vein

Deposit Class

Yes

Conventional Deposit Type?

Irregularly distributed and shaped ore pockets and

Deposit Shape

Deposit: av. 2.5 km

Deposit Length

Deposit: <1.5 km (NW

Deposit Width

Depth To Deposit Top

>2000 m (mining:1830

Depth To Deposit Bottom

1 cm - 10 m , av. 5-

Deposit Thickness

Deposit Width:
Deposit: <1.5 km (NW

Deposit Length:
Deposit: av. 2.5 km 

Deposit Depth Top:
Near surface to >200

Deposit Depth Bottom:
>2000 m (mining:1830

Deposit Thickness:
1 cm - 10 m , av. 5-

Deposit Shape: Irregularly distributed and shaped ore pockets and

Deposit Dimensions

≥0.20 - <0.50

Grade Range

≥50000 - <100000

Original (Geological) Resource Range

General Description Of Resources

Type of estimate

Date of estimate

Red Book Resource Cost Category

73105

Cumulative Production (t)

0.4

Production Grade (%)

1949

Production Period

Ag,bi,Co,Ni,U

Commodities Recovered

Geological Information

(a) Older granite: 330-320 Ma; (b) Younger granite: 305-295 Ma

Host Rock Stratigraphic Age

280-270 Ma; 185-175 Ma; 160-140 Ma; 30-5 Ma

Mineralisation Radiometric Age

Phanerozoic/Paleozoic/Ordovician

Mineralisation Stratigraphic Age

Host Rock Radiometric Age

Pitchblende, minor coffinite

Major Ore Mineral(s)

Other Ore Minerals

Elemental Association

Three main paragenetic associations: (a) comb quartz-carbonat-U (kku-formation), (b) magnesian carbonate-pitchblende-fluorite (-Se) (mgu-formation), (c) Bi-Co-Ni-As-U-Ag (biconi-formation) with dominance of mgu-formation. Host rocks: graphitic, pyritic sc

Description of Mineralization

Contactmetamorphism; silicification, sericitization, sulfidization, argillization, chloritization

Alteration

Epigenetic hydrothermal processes during repeated tectonic events in late to post-Hercynian and Alpidic time

Metallogenic Aspects

Vicinity of uraniferous leucogranite, NW-SE and younger E-W structures, contact-metamorphosed lithologies, alternating chemical and physical properties of lithologies,

Ore Controls

Ore Mineralogy:
Pitchblende, minor coffinite

Mineralization Description:
Three main paragenetic associations: (a) comb quartz-carbonat-U (kku-formation), (b) magnesian carbonate-pitchblende-fluorite (-Se) (mgu-formation), (c) Bi-Co-Ni-As-U-Ag (biconi-formation) with dominance of mgu-formation. Host rocks: graphitic, pyritic sc

Ore Controls:
Vicinity of uraniferous leucogranite, NW-SE and younger E-W structures, contact-metamorphosed lithologies, alternating chemical and physical properties of lithologies,

General Description of Mineralization

Western Erzgebirge

Geological Region

Mining District

Geological Setting

Vein type, perigranitic

Geological Remarks

Saxo-Thuringian Zone, Erzgebirge Anticlinorium, Loessnitz-Zwoenitz Syncline, Gera-Jachymov Lineament

Tectonic Setting

Gneiss, schist intruded by differentiated granite massif

Lithology

Lithology:
Gneiss, schist intruded by differentiated granite massif

Tectonics:
Saxo-Thuringian Zone, Erzgebirge Anticlinorium, Loessnitz-Zwoenitz Syncline, Gera-Jachymov Lineament

Alteration:
Contactmetamorphism; silicification, sericitization, sulfidization, argillization, chloritization

Hostrock Age: Proterozoic-Lower Paleozoic

General Geological Remarks