St. Joseph Island Puddingstone
Pudding stone, is a conglomerate rock made up of a mixture of different, irregular sized grains and pebbles held together by a finer matrix, usually formed from quartz sand. The sedimentary rock is formed in river channels and may contain various minerals such as chromite, corundum, platinum, diamonds, gold, sapphire, and zircon. Its name is said to derive from a resemblance to Christmas pudding.
St. Joseph Island puddingstone, found in the St. Mary's River area of Northern Ontario contains red and brown pieces of jasper, a kind of quartz. . |