If you have an interest in petrified wood then this new book is a must have for you. Just published in March, 2006 this is a monster of a book. At seven and a half (7 1/2) pounds, 456 12'' by 11'' pages, this 1 3/4'' thick book has 1600 color photographs.
''The most intriguing, beautiful, and informative book of all time, exploring the subject with images to illustrate each point - with scanning electron microscope images, digital micro images, macro photographs, and medium format photographs. Frank Daniels and geologist Dick Dayvault team up to explore the intricacies of fossil wood by leading the reader on an expedition into the micro world of fossil wood mineralization and cell structures.''
Frank J. Daniels, who also authored the book Petrified Wood: The World of Fossilized Wood, Cones, Ferns, and Cyads and Richard D. Dayvault, a geologist and long time editor of Rocks & Minerals magazine, are the authors of this masterpiece on fossil woods. The photography is by Frank J. Daniels.
Not only does it contain beautiful pictures of fossil woods from locations all over the world it discusses the mineralization process and how to identify softwoods and hardwoods from different eras.
The pictures are both macro, pictures of the fossil wood specimen, and micro, microscopic pictures of the cellular details of the wood. See pictures of the growth rings at the beautifully preserved cell level.
How did the wood turned to stone? What type of stone is it? What are the minerals replacing the wood? What causes the colors? What conditions are required? A chapter of the current understanding presents the answers to these questions. Gone are the old ideas of silicon replacement of the carbon atoms replaced by the templating theory of permineralization.
To me one of the most interesting things is what type of tree was it that became petrified? There is a 124 page chapter full of pictures, charts and text to aid you in identifying the structure and type of wood making up your petrified specimen.
The BelOMO 7x Triplet Loupe magnifier has a viewing area of 22mm, much larger than the Bausch & Lomb Hastings 7x Triplet Magnifier. The 3 elements making up this achromatic triplet provide a bright and clear view. The 7x power magnification provides a nice level of magnification, outstanding depth of field (the area that appears in focus on an object having an irregular surface like a rock or mineral) and the large lens size captures lots of light for a very bright view.
The housing and cover are coated with a matte black finish and assembled using flathead screws. Screws allow you to adjust the swing tension to your liking. Belarusian Optical and Mechanical Association (BelOMA), makers of sights for guided weaponry, camera lenses, and other optical components manufacturers these loupes.
We highly recommend this loupe! The BelOMO loupes are the loupes we always use though it's the 10x that we typically carry in the field. The 7x has almost that magnification but provides a larger field of view. Of course the larger glass lens captures more light making the image even brighter and easier to see.
Don't let this price fool you. The BelOMO loupe is a FANTASTIC buy. These are quality lenses that stand on their own against the higher priced competition. Take advantage of the recovering Belarus economy and a military supplier finding other revenue streams in a capitalistic market.
Each BelOMO loupe we ship is custom treated to prevent the screws from coming loose with usage.
The Valley Rock 20 oz Pointed Tip Hammer is similar in weight, and quality, to the Estwing 22oz Pointed Tip Rock Hammer. It is a smaller rock hammer than all the Estwing Rock Hammers except the Estwing 14 oz Pointed Tip Rock Hammer.. One piece drop forged design creates a virtually unbreakable heavy duty hammer - drop forged, heat treated, fully polished. The two-tone Soft-Touch Rubber cushioned grip is form fitting, shock absorbent and non-slip.rubber grip is finger fitted, shock absorbent and non-slip.
The Valley 20 oz Pointed Tip Rock Hammer is similar in weight, and quality, to the Estwing 22oz Pointed Tip Rock Hammer. It is a smaller rock pick than all the Estwing rock picks except the Estwing 14 oz Pointed Tip Rock Hammer. It has a square faced striking surface, larger than the Estwing rock picks, on one end and a pointed pick tip on the other. Made in China but it's high quality. We've sold over 2100 and have only had one returned for a broken tip. (The hammer had what looked like vice marks on it so I suspect the damage was artificially introduced.). This Valley 20 oz Pointed Tip Rock Hammer is a great tool for the professional, student, or recreational geologist and a great rock hammer for rockhounds. It will last you a life time.
|Head Width||Overall Length||Head Weight||Total Weight|
|7 inches||11 inches||20 ounces||1 pound 14.5 ounces|
Sign in to post a review