Photograph of the right side of stone axe (ISAP 00043) from Ballintoy, Co. Antrim, from the National Museum of Ireland (NMI 1897:316). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ia. Petrology - Very dark grey, mottled coarsely - microdiorite type. Description - Sides flatte
Axe | Porcellanite
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Photograph of face 1 of stone roughout (ISAP 06941) from Cloghs, Co. Antrim, from the Ulster Museum (UM WM1198). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ic. Petrology - Grey, lightly streaked, coarse mottled. Description - Roughout. Flaked all over surface. Flaking disti
Roughout | Porcellanite
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Photograph of face 1 of stone axe (ISAP 00043) from Ballintoy, Co. Antrim, from the National Museum of Ireland (NMI 1897:0316). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ia. Petrology - Very dark grey, mottled coarsely - microdiorite type. Description - Sides flattened. Ju
Axe | Porcellanite
Image
Photograph of the left side of stone adze (ISAP 12071) from Kilrea, Co. Derry, from the Ulster Museum (UM WM 2613). Macro-ID - Porcellanite Petrology - Grey, lightly speckled, lineated streaked in bands, fine mottled. Description - Sides - Both rounded, very regular, well ground
Adze | Porcellanite
Image
Photograph of face 2 of stone axe (ISAP 10079) from Giants Causeway, Co. Antrim, from the Ulster Museum (UM 1913:163G). Macro-ID - Porcellanite Petrology - Dark grey, 40% sub-euhedral 5mm haematite porphs, very coarse (> 1cm) nodular streaked, coarse mottled. Description - Sides
Axe | Porcellanite
Image
Photograph of face 2 of stone adze (ISAP 12071) from Kilrea, Co. Derry, from the Ulster Museum (UM WM 2613). Macro-ID - Porcellanite Petrology - Grey, lightly speckled, lineated streaked in bands, fine mottled. Description - Sides - Both rounded, very regular, well ground and pol
Adze | Porcellanite
Image
Photograph of face 1 of stone axe (ISAP 03400) from Dún Laoghaire, Co. Dublin, from the National Museum of Ireland (NMI 1955:109). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ib. Petrology - Medium light grey, mottled very faintly. Contains very large interconnected nodular
Axe | Porcellanite
Image
Photograph of face 1 of stone axe (ISAP 10079) from Giants Causeway, Co. Antrim, from the Ulster Museum (UM 1913:163G). Macro-ID - Porcellanite Petrology - Dark grey, 40% sub-euhedral 5mm haematite porphs, very coarse (> 1cm) nodular streaked, coarse mottled. Description - Sides
Axe | Porcellanite
Image
Photograph of face 2 of stone axe (ISAP 03400) from Dún Laoghaire, Co. Dublin, from the National Museum of Ireland (NMI 1955:109). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ib. Petrology - Medium light grey, mottled very faintly. Contains very large interconnected nodular
Axe | Porcellanite
Image
Photograph of face 1 of stone adze (ISAP 12071) from Kilrea, Co. Derry, from the Ulster Museum (UM WM 2613). Macro-ID - Porcellanite Petrology - Grey, lightly speckled, lineated streaked in bands, fine mottled. Description - Sides - Both rounded, very regular, well ground and pol
Adze | Porcellanite
Image
Photograph of the right side of stone axe (ISAP 03400) from Dún Laoghaire, Co. Dublin, from the National Museum of Ireland (NMI 1955:109). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ib. Petrology - Medium light grey, mottled very faintly. Contains very large interconnected
Axe | Porcellanite
Image
Photograph of the left side of stone axe (ISAP 03400) from Dún Laoghaire, Co. Dublin, from the National Museum of Ireland (NMI 1955:109). Macro-ID - Porcellanite. Micro-ID - Porcellanite Ib. Petrology - Medium light grey, mottled very faintly. Contains very large interconnected n
Axe | Porcellanite
Image