Neolithic, Ground and Polished Axe

This axe weighs 296g, has a full oval cross-section, curved symmetrical edges and asymmetrical blade. The blade, sides and faces are ground and polished. The butt is ground. Depressions on one side may indicate hafting. The edge is sharp. The findspot is Rockbarton Bog, Lough Gur, Limerick. There are two Irish sources for porcellanite, Tievebulliagh, Co. Antrim and Brockley, Rathlin Island. Both utilised in Prehistory.

该石斧重296克，整体呈完整的椭圆形横截面，边缘为弧形对称分布，但刃部不对称。斧刃、侧边与两个斧面均经过研磨与抛光处理，斧尾亦经研磨加工。单侧存在的凹陷或为装柄遗留的痕迹。该斧刃部锋利。其出土地点为爱尔兰利默里克郡洛克古尔湖（Lough Gur）的罗克巴顿沼泽（Rockbarton Bog）。爱尔兰境内共有两处瓷凝灰岩（porcellanite）产地：安特里姆郡的蒂夫布拉亚赫（Tievebulliagh, Co. Antrim）与拉斯林岛（Rathlin Island）的布罗克利（Brockley），两处产地的瓷凝灰岩在史前时期均被开采利用。