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Step-by-step Q&As with detailed colour photographs for easy
identification. The Firefly Guide to Minerals, Rocks & Gems is
designed for easy and reliable identification of minerals, gems and
rocks. Beginning with the stone's colour and any streak, and using
a sequence of straightforward questions and answers - aided by
1,300 photographs and drawings - it's easy to narrow down the
possibilities among 350 minerals, gems and rocks to the conclusive
classification. The book organizes the rocks by colour: Blue, Red,
Yellow, Brown, Green, Black, and White. Identification begins with
noting the colour of the rock's streak (i.e., vein, line).
Identification is then further narrowed down with respect to
Colour, Crystal form, Hardness, Lustre, Density, Cleavage, Break
and Tenacity. Each rock's main photograph shows the general or
typical view, and identification tips about features are noted in
the margins of the respective page. Similar stones are presented
for comparison and tips are provided that can eliminate imposters.
Drawings show the mineral's crystal shape. The chemical formula
reveals the elements from which the mineral is composed. There is
also information about where the stone is typically found and some
of the ways that humans have utilized it. Packed with beautiful
photographs of earth's many rocks, minerals and gems, The Firefly
Guide to Minerals, Rocks & Gems is perfect for amateur
mineralogists and collectors.
Mineral collecting by amateur “rockhounds” has never been more
popular. Old quarries, road cuts, and exposed landscapes are being
examined by new generations of minerals enthusiasts. Each needs a
comprehensive guidebook with clear photographs and accurate data.
This is it. In a thick but handy format, more than 700 different
minerals and rocks are grouped by colour (for ease of location in
the book) — blue, red, yellow, brown, green, white and black
crystals; brown and grey sedimentary rocks; and meteorites for
anyone lucky enough to find one. Each has a picture – four to a
page—opposite detailed but clear data: Chemical formula;
Hardness; Colour; Density; Lustre; Cleavage; Fracture; Tenacity;
Crystal form; Similar minerals and where they are likely to occur.
And many will have a diagram of its crystal form—up to four, for
fluorite, for example. The Minerals Encyclopedia is unusual for the
number of minerals it covers: more than 700 in 444 pages, with a
useful glossary, an introduction to mineral collecting, and printed
front and back flaps that offer quick reference in the field, and a
measuring rule on the back cover. This is a superior reference for
rockhounds, geology students and outdoors people with an interest
in what’s under their feet.
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