Location: |
Navan, County Meath, Ireland |
Major Minerals: |
Iron-poor sphalerite, galena, marcasite, pyrite |
Minor Minerals: |
Semseyite, bournonite, freibergite, pyrargyrite, boulangerite, cylindrite |
Trace Minerals: |
Include franckeite, argyrodite and jordanite |
Textures: |
Sphalerite, galena and baryte show rhythmical lamination (bedding parallel), graded bedding and soft sediment disruption. Pyrite/marcasite, sphalerite and galena show stalactitic forms. Crustiform. sphalerite, galena, pyrite, marcasite, calcite, dolomite and baryte are associated with void-infilling of breccia zones or cross-cut the rhythmical ore. Galena carries fine-grained sulphosalt inclusions along grain boundaries. Locally, pyrite and marcasite form framboid-rich layers. |
References: |
Andrew and Ashton, 1982, 1985; Ashton et al., 1986; Fontbote and Amstutz, 1986 |