Rock & Gem

On the Rocks

- BY BOB JONES

The American Museum of Natural History is one of the scientific treasures of our country. Along with countless millions, this writer has visited its halls and marveled at the history of the natural world so well displayed in the vast halls of this centrally located museum. The main museum is just a stone’s throw from Central Park in the heart of the city and is often referred to as the New York Museum. As it developed, it was supported by some of the wealthiest people like J.P. Morgan, Washington Roebling and many important families and foundation­s.

Now, thanks to many more benefactor­s, the Allison and Roberto Mignone Hall of Gems and Minerals, an amazing 11,000 square feet of displays, opened in June for enjoyment and education. Using minerals and gems, the hall tells the story of the evolution of the earth from its birth in space billions of years ago to today.

The American Museum of Natural History had its beginnings when the state of New York, in 1859, passed a bill for the establishm­ent of a museum. Five years later, constructi­on started, and in 1873 the Museum officially opened on Central Park West. From that simple beginning, the American Museum complex has grown to encompass 10 buildings housing major collection­s of every facet of earth, nature, and science.

The gem and mineral collection on display in previous years was typical of mineral displays I first saw in the 1950s. Labeled mineral specimens were out in rows. My first visit to the Museum was because of my desire to see dinosaur eggs I learned were on display. Dinosaur eggs were unknown to humankind until the 1920s when eggs were discovered in the Gobi Desert by American Museum’s dinosaur expert Roy Chapman Andrews who discovered them on a Museum expedition.

I can’t write about the American Museum without mentioning the Museum curator most mineral collectors knew, Dr. Fred Pough. Collectors know him through his superb mineral collector’s text, “Field Guide to Rocks and Minerals.” As the hobby grew after World War II, Pough saw

the need for a mineralogy book designed for the amateur collector. In 1953 his “Field Guide” was published and is now in its fifth edition. Through his writings and his work at this museum, Fred has undoubtedl­y impacted our hobby more than anyone else. He became so well known as a gem expert in New York he is the only museum curator I know of featured in a comic book about gems and the museum.

Ironically, in 1964 there actually was a gem theft at the American Museum featuring a character named “Murph the Surf.” He, along with others, climbed through a bathroom window and stole a couple of dozen loose diamonds, including the 16.24 carat Eagle diamond, the 100 carats Delong Star Ruby and the Star of India sapphire, 573 carats. The gems were eventually recovered, and this last beauty, the Star of India, is back on display in the new hall. However, the Eagle diamond was never recovered and was probably split up. Murph and his ilk ended up in jail.

A major change in the museum’s Guggenheim Gem and Mineral Hall came about in the 1970s, when curator Vince Manson took over. I had gotten to know Vince at the

Tucson Shows. He was a delightful South African fellow full of stories about working in the South African gold mines. At that time, mineral exhibits were still hued to the traditiona­l practice of display, but were still a refreshing change from the old exhibits. Vince later moved on to the education department of the Gemologica­l Institute of America and has since passed away.

The current curator, George Harlow, took over and was kind enough to arrange for Rock & Gem to receive news releases describing the latest major upgrade of the gem and mineral hall. The new hall is a complete shift to a new modern, scientific approach of exhibiting minerals with an overall educationa­l theme based on mineral evolution.

George has done a masterful job of managing the collection that has grown under his tenure to some 5,500 specimens. Along with his curatorial duties, George has done studies and writings on diamonds, which are informativ­e and very useful.

The American Museum has joined a movement among public museums to use the evolution of a few dozen known early mineral species, considered the building blocks of today’s universe and planetary system to the complex earth mineralogy of today of some 5,000 species with more still being discovered. We now know the earth and the universe around it is an ever-evolving story of the known 92 natural elements that make up every type of rock group; igneous, metamorphi­c and sedimentar­y, which make up of the earth’s minerals.

The new exhibits demonstrat­e how the earth eventually formed as meteors and comets drew together, forming our planet. Once formed, the forces of gravity, weathering and all the other forces brought about those three major rock types, each with its own complex suite of minerals. Today we use the minerals in industry, jewelry, and the growth of today’s modern age.

All this is displayed in the redesigned Allison and Roberto Mignone Gem and Mineral Hall, culminatin­g with wonderful mineral exhibits that range from quite ordinary but beautifull­y crystalliz­ed species, many of them recently obtained, to classic examples of species of historical­ly important minerals. What could be older and more appropriat­e than a nine-pound almandine garnet recovered during the building of a subway tunnel in the ancient metamorphi­c rock upon which Manhattan is built? Benefactor Allison Mignone describes walking into the new gem and mineral hall as being like “walking into a jewel box.” Several large examples of minerals add to the overall stunning visual impact upon entering the new hall.

One such pair of large specimens is an Uruguay amethyst geode that has been cut in half to expose the lustrous violet amethyst quartz crystals lining the interior walls of the geode. This huge amethyst geode is an astonishin­g 12,000 pounds, among the largest in the world, and was recovered from the Molsa mine, Uruguay.

Of all the large specimens on exhibit, my favorite is an old-timer that dates back to the 1880s from Arizona, a four-and-a-half-ton solid block of copper ore. This block of sulfide, and secondary copper minerals had been mined in the Copper Queen mine in the 1980s, during the heyday of this famous copper mine. The mine owners had been invited to exhibit minerals from Bisbee at the 1893 Chicago Exposition. The exhibit included fine specimens and the huge ore block. This block was shown purposely to attract investors to buy stock in the young mining company. Once the Exposition ended, the Bisbee minerals were sold off and the massive block of ore was shipped to the American Museum for display. Upon arrival, the museum folks realized there was a problem. At four and a half tons, the floor could not hold the copper beauty. The floor had to be re-enforced before it could be put on display. I suspect the floor where the giant geode rests has also been strengthen­ed.

Another exhibit in the American Museum I find very interestin­g is Copperman, the mummified remains of an ancient Chilean native copper miner unearthed during copper mining in Chile in the 1920s. With his leather bag and stone hammer, he had been tunneling in a zone of copper when the tunnel collapsed on him. When found, he was named Copperman and shipped to the American Museum, where he was displayed with much fanfare. The problem is folks expected to see a mummy replaced by native copper and what they saw were the dull grayish dried-out remains of a human. Copperman had to be removed from the exhibit but has since returned for viewing.

The obvious trend in redesigned museums is to feature large specimens along with a variety of eye-catching minerals, historical­ly important species, and at some point, precious gems and jewelry. This trend is obvious in the new hall at Yale’s Peabody Museum and, to a lesser degree, in Dallas’ Perot Museum and the new University of Arizona Museum in Tucson. American Museum follows this pattern. The Mineral Hall is coupled with precious gem exhibits.

Of the large specimen exhibits, the one that will catch every child’s eye is the huge wall-like display of bright green and red fluorescen­t minerals from Sterling Hill, New Jersey, measuring sixteen feet by seven feet and ten inches high. The wall weighs nearly a ton and looks like an ordinary rock, but under various forms of ultraviole­t light excitation, the wall glows bright red and green. This display is made of calcite and willemite from the New Jersey deposits, which are world-famous for the variety of fluorescen­t minerals found there. Such a fluorescen­t display will stop visitors in their tracks as they marvel at the magical change in the rocks with a change in lights.

The gems are, of course, the big draw of the general public. The Star of India, with its exciting history and rarity, will always be popular. After all, it is the largest gem blue sapphire in the world, which was formed in rocks two billion years old. The Delong Ruby adds its lore to the exhibits. These beauties, along with many others, give visitors a lot to absorb.

Along with the gems is one necklace that deserves mention. Many consider crocodiles among the ugliest animals on earth. Who can love one of these big ugly beasts? Well, actress Marila Flelix could. She thought crocodiles were just fine and worthy of being replicated for jewelry. She actually took a live small crocodile to Cartier’s in Paris and they created a gold version, replicatin­g the scales for a more realistic effect and made a necklace pendant jewel of gold embedded with over 60 carats of yellow diamonds and nearly 67 carats of emeralds This stunning beauty is displayed with other gems in the Keith Meister Gallery of Gems as part of the Nils Hermann, Cartier collection.

As is the case with other gem and mineral halls recently updated, a visitor should plan for lengthy and multiple visits to the American Museum to fully enjoy and study the presentati­ons and exhibits. Each new hall represents an opportunit­y to learn about our earth’s minerals that are so critical to its developmen­t and so necessary in our lives today.

 ?? FININ, AMERICAN MUSEUM OF NATURAL HISTORY ?? This is just one area visitors see as they enter the Museum’s Mignone Gem and Mineral Hall.
FININ, AMERICAN MUSEUM OF NATURAL HISTORY This is just one area visitors see as they enter the Museum’s Mignone Gem and Mineral Hall.
 ?? FININ, AMERICAN MUSEUM OF NATURAL HISTORY ?? This is one half of a 12,000 pound amethyst geode displayed in the new Mignone Gem and Mineral Halls of the American Museum of Natural History.
FININ, AMERICAN MUSEUM OF NATURAL HISTORY This is one half of a 12,000 pound amethyst geode displayed in the new Mignone Gem and Mineral Halls of the American Museum of Natural History.
 ?? FININ, AMERICAN MUSEUM OF NATURAL HISTORY ?? Measuring 6 feet by 7 feet, this is a one ton wall of calcite and willemite fluorescin­g red and green under ultra violet excitation, part of a larger floor display in the new hall.
FININ, AMERICAN MUSEUM OF NATURAL HISTORY Measuring 6 feet by 7 feet, this is a one ton wall of calcite and willemite fluorescin­g red and green under ultra violet excitation, part of a larger floor display in the new hall.
 ?? FININ, AMERICAN MUSEUM OF NATURAL HISTORY ?? Created by Cartier of Paris, this gold Crocodile pendant has 60 carats of yellow diamonds and 66.8 carats of emeralds and is part of the Museum’s new displays.
FININ, AMERICAN MUSEUM OF NATURAL HISTORY Created by Cartier of Paris, this gold Crocodile pendant has 60 carats of yellow diamonds and 66.8 carats of emeralds and is part of the Museum’s new displays.
 ?? BOB JONES ?? Elbaite tourmaline mined in the Gillette quarry, Connecticu­t in colonial times is now in the Museum collection.
BOB JONES Elbaite tourmaline mined in the Gillette quarry, Connecticu­t in colonial times is now in the Museum collection.
 ??  ?? Bob Jones holds the Carnegie Mineralogi­cal Award, is a member of the Rockhound Hall of Fame, and has been writing for Rock & Gem since its inception. He lectures about minerals, and has written several books and video scripts.
Bob Jones holds the Carnegie Mineralogi­cal Award, is a member of the Rockhound Hall of Fame, and has been writing for Rock & Gem since its inception. He lectures about minerals, and has written several books and video scripts.

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