"The World's Minerals" by Leonard J. Spencer, M.A., F.G.S. of the Mineral Department, British Museum, Editor of the Mineralogical Magazine - with Forty Coloured Plates and Twenty-One Diagrams. W. & R. Chambers, Limited, 1911. The item measures approximately 5-1/2" x 8-1/4" x 1-1/2" and weighs about 1.6lbs. The book is in used, vintage condition with signs of heavy wear and use, as expected with age. Exterior hardcover shell is in poor condition. Please reference all of the photographs as they are a part of the description.