Hi,
Its not a mattock or other gardening tool. Its called shovel nosed adze....I think. Typical adze shape but with little wings at each side of the blade.
This came up here about 3 months ago I think but can't recall where.
http://www.probertencyclopaedia.com/cgi-bin/res.pl?keyword=Adze&offset=0
http://www.oldtools.co.uk/tools/edge_tools/adzes.axes/adzes.axes.php second one down
Concave gouge shaped adze here
http://www.axminster.co.uk/product.asp?pf_id=29843&name=Adze&user_search=1&sfile=1&jump=0
Try here for Gandfors Brux which are very good but expensive
http://www.wealddown.co.uk/Shop/gransfors-bruks-axes.htm
Straight Adze Short Handle
This adze has an axe style head with a flat blade for easy cutting. The 3” blade is slightly swept. Weight incl. handle approx 2lb with a handle length of 7”. The axe is fitted with a tight-grained hickory handle and provided with a grain-leather sheath with snap fastener.
£125.00
477
Straight Adze Long Handle
As above but with a 25 inch handle This adze has an axe style head with a flat blade for easy cutting. The 3” blade is slightly swept. Weight incl. handle approx 2lb ½. The axe is fitted with a tight-grained hickory handle and provided with a grain-leather sheath with snap fastener.
£139.00
478
Short Gutter Adze.
This adze has an axe style head with a drooped blade for easy cutting. The blade is deeply swept and slightly flattened at the bottom for clean shaping. It is 3” wide with a handle length of 7”. The head weight is 2lb. The axe is fitted with a tight-grained hickory handle and provided with a grain-leather sheath with snap fastener.
£127.00
479
Long Gutter Adze.
This premium Swedish adze features a hand forged axe-style head with a nicely drooped blade for easy, efficient cutting. Grasp its 25” hickory axe handle near the end for use with an erect stance and a heavy swing, or hold it just as comfortably 4” to 6” from the end for a compact, fully controlled swing with your elbows braced against your knees. The blade is 3” wide, deeply swept and slightly flattened at the bottom for clean, smooth shaping. Head weight 2 1/2lbs. The axe is fitted with a tight-grained hickory handle and provided with a grain-leather sheath with snap fastener.
£144.00
regards
Alan