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Cooleen Zone

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Journal Article
Journal: Economic Geology
Published: 01 January 2003
Economic Geology (2003) 98 (1): 191-193.
..., but no such event is recorded at the Cooleen zone. The morphology and paragenesis of the breccias described by Lee and Wilkinson (2002) have a number of features in common with epigenetic hydrothermal breccias described from elsewhere in the Irish ore field, and from localities outside Ireland. Mineralized...
Journal Article
Journal: Economic Geology
Published: 01 January 2003
Economic Geology (2003) 98 (1): 194-198.
... would not agree with this conclusion, particularly in relation to the Silvermines area, we accept that the ore-hosting breccias at Lisheen, Galmoy, and Silvermines have been significantly modified by hydrothermal processes; indeed, that is what we have clearly documented in the Cooleen zone. The key...
FIGURES
Journal Article
Journal: Economic Geology
Published: 01 May 2002
Economic Geology (2002) 97 (3): 653-662.
..., and their genetic relationship to economic mineralization is uncertain. Detailed studies of black dolomite matrix breccias have been carried out in the Cooleen zone, a subeconomic satellite of the Silvermines deposit, County Tipperary. The Cooleen zone is only weakly mineralized, preserving early cementation...
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Image
F ig . 2. South-southwest–north-northeast cross section of
the <b>Cooleen</b> <b>zone</b>...
Published: 01 May 2002
F ig . 2. South-southwest–north-northeast cross section of the Cooleen zone. The geometry of the entire breccia body is shown in relation to the Cooleen fault. Type II and III breccias are confined within the type I breccia wedge. Type IV stockwork breccias are localized around the massive sulfide
Image
F ig . 3. Three dimensional model of the <b>Cooleen</b> <b>zone</b>, showing
fault contro...
Published: 01 May 2002
F ig . 3. Three dimensional model of the Cooleen zone, showing fault control on the overall geometry of the type I and III breccias. Faulting created a small sub-basin, which was infilled by debris. Dolomitized breccias are located near the base of the breccia body and sulfide mineralization
Image
Classification Table for the Four Breccia Types
Present in the <b>Cooleen</b> <b>Zone</b>...
Published: 01 May 2002
T ABLE 1. Classification Table for the Four Breccia Types Present in the Cooleen Zone Breccia   Clast size   Internal textures and Breccia texture     types Clast shape (mm) Clast types in order of relative abundance matrix composition (view ~50 mm across
Image
F ig . 1. Location map showing the G and B <b>zones</b> of the
Silvermines deposit...
Published: 01 May 2002
F ig . 1. Location map showing the G and B zones of the Silvermines deposit and the Cooleen zone satellite (modified after Andrew, 1986b and Mallon, 1997 ). The dotted line crossing the Cooleen zone is the line of cross section shown in Figure 2 .
Image
F ig . 6. Temporal relationship of the different cementation and
alteration...
Published: 01 May 2002
F ig . 6. Temporal relationship of the different cementation and alteration stages in the Cooleen zone.
Journal Article
Journal: GSA Bulletin
Published: 01 May 2005
GSA Bulletin (2005) 117 (5-6): 736-745.
.... , 2002 , Cementation, hydrothermal alteration, and Zn-Pb mineralization of carbonate breccias in the Irish Midlands: Textural evidence from the Cooleen Zone, near Silvermines, County Tip-perary: Economic Geology and Bulletin of the Society of Economic Geologists , v. 97 p. 653 – 662 . Lockner...
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Image
F ig . 1. Simplified cross sections illustrating main
 features of type 1, ...
Published: 01 January 2003
F ig . 1. Simplified cross sections illustrating main features of type 1, 2 and 5 breccias in the Irish orefield. (a) Type 1: Cooleen zone, Silvermines (after Lee and Wilkinson, 2002 ); (b) type 2: Derryville zone, Lisheen (after Eyre, 1998 ); (c) type 5 (after Emo, 1986 ). Horizontal scale
Journal Article
Journal: Economic Geology
Published: 01 March 2010
Economic Geology (2010) 105 (2): 417-442.
... for the strongly oscillating chemistry and pH implied by the multiple interbanding of calcite(-melnikovite/pyrite) and marcasite. The Cooleen zone is a satellite of the Silvermines system ( Lee and Wilkinson, 2002 ) that was explored by Ennex International in the 1990s before being abandoned as uneconomic...
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Image
Simplified surface geologic map of the Silvermines deposit. Grid references...
Published: 01 November 2018
. Faults are in bold and abbreviated as 5100F = 5100 fault, B1F = B zone 1 fault, B2F = B zone 2 fault, B3F = B zone 3 fault, COO = Cooleen fault, GFZ = G zone fault. Section lines X-X', Y-Y', and Z-Z' refer to Figure 10 .
Journal Article
Published: 01 May 2006
Journal of the Geological Society (2006) 163 (3): 431-446.
...N.H. Woodcock; J.E. Omma; J.A.D. Dickson Abstract A body of chaotic breccia along the reverse-oblique Dent Fault zone is ascribed to hanging-wall collapse into persistent voids created by geometric mismatch of fault walls, although some implosion into transient voids is a possibility. The breccia...
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Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1577-1591.
...Karen D. Kelley; Julie A. Dumoulin; Scott Jennings Abstract The Anarraaq deposit in northern Alaska consists of a barite body, estimated to be as much as 1 billion metric tons, and a Zn-Pb-Ag massive sulfide zone with an estimated resource of about 18 Mt at 18 percent Zn, 5.4 percent Pb, and 85 g/t...
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Image
Map and cross section of the Silvermines Zn-Pb deposit, Tipperary, Ireland....
Published: 01 February 2019
complicated by E-W-trending Variscan dextral strike-slip transpressive faults (blue). Four NW breached relay ramps can be identified: (1) between the G zone (GZ) and B zone 1 (BZ1) faults, (2) between the BZ1 and B zone 2 (BZ2) faults, (3) between the BZ2 and B zone 3 (BZ3) faults, and (4) between the BZ3
Image
Various perspectives of the 3-D model of Silvermines, showing the base of t...
Published: 01 February 2019
. The contoured base of Waulsortian Limestone Formation surface ends in the southeast where it intersects the present-day topographic surface. Abbreviations for each fault segment and relay ramp are as follows: G zone fault (GZ), 5100 fault (5100F), B zone fault 1 (BZ1), B zone fault 2 (BZ2), B zone fault 3 (BZ3
Journal Article
Journal: Economic Geology
Published: 01 November 2004
Economic Geology (2004) 99 (7): 1481-1508.
..., Sb, and As for up to ~100 m stratigraphically below Zn-rich silica rock. At Anarraaq, the Tl anomaly is most extensively developed, and enrichment relative to unaltered black shale of the Kuna Formation is present up to 62 m above the highest Zn-Pb sulfide zones. The magnitude of the enrichment...
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Journal Article
Journal: Economic Geology
Published: 01 November 2018
Economic Geology (2018) 113 (7): 1455-1477.
.... Faults are in bold and abbreviated as 5100F = 5100 fault, B1F = B zone 1 fault, B2F = B zone 2 fault, B3F = B zone 3 fault, COO = Cooleen fault, GFZ = G zone fault. Section lines X-X', Y-Y', and Z-Z' refer to Figure 10 . ...
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Journal Article
Journal: Economic Geology
Published: 01 June 2003
Economic Geology (2003) 98 (4): 715-729.
... in smithsonite and hemimorphite deposits. Secondary Ag minerals also occur locally in the weathered zones (hence the derivation of the name Silvermines given by early prospectors). Hemimorphite is generally enriched in the Cooleen zone, where SiO 2 derived from host marly limestones reacted with acidic ground...
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Journal Article
Journal: Economic Geology
Published: 01 May 2003
Economic Geology (2003) 98 (3): 649-656.
... . Lee , M.J. , and Wilkinson , J.J. , 2002 , Cementation, hydrothermal alteration and Zn-Pb mineralization of carbonate breccias in the Irish Midlands: Textural evidence from the Cooleen zone, near Silvermines, County Tipperary : Economic Geology , v. 97 , p. 653 – 662 . Little , C.T.S...
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