The Mineral Exhibit

The Mineral Exhibit

By Dr. Graham Young, past Curator of Palaeontology & Geology

 

If you visit this page occasionally and have been wondering about when the next blog post would be forthcoming, well, I had been wondering that too. I have begun new posts several times, but in each instance my focus has been pulled away by the same all-consuming activity: my time has been taken up by the completion of a mineral exhibit. This past week, we finally did the installation, so I thought I had might as well set those posts-in-progress aside yet again. Here, instead, are some photos of the exhibit.

A dramatically lit display case with multiple levels showing off various mineral specimens.

Two individuals wearing white lab coats place specimen mounts in an open display case.

Collections specialist Janis Klapecki and designer Stephanie Whitehouse work on the final location of one of the plexiglas specimen mounts.

At the Museum we had long recognized that a mineral exhibit was one of the features most lacking in the Earth History Gallery. Minerals are the basic building blocks of rocks and other geological materials, we have a great diversity of minerals in this province’s rocks, and of course minerals are often beautiful objects that are treasured by many collectors.

For the past several years we have been collaborating with the Mineral Society of Manitoba to acquire specimens suitable for exhibit, and The Manitoba Museum Foundation and the Canadian Geological Foundation had kindly provided us with funding to construct cases. This exhibit is at the front end of the Earth History Gallery, where we only had space for a couple of cases, and the number of specimens and volume of text were quite limited, so this should have been a simple little exhibit project, no?

A large pinkish amethyst in a display case.

The giant amethyst now has its own gallery case (in the next post I will tell you how we got it there!).

A selection of placed or mounted mineral specimens against white backgrounds in a display case.

Beryls from eastern Manitoba (top), along with pyrites, feldspars, and base metal ores.

No. Things are never simple when you have to develop an exhibit from scratch. And in this particular instance our design and exhibit staff were working to develop techniques that we had not tried before.  We had examined mineral exhibits in many other places (both in-person and through photographs) and had decided that we needed dark cases with the light really focused on the specimens.

 

Image: The mid part of the case features a variety of minerals, including a Tanco rubellite (donated by Cabot Corporation) and samples of beautiful Michigan copper (the tree-like specimen was acquired and donated by the Mineral Society of Manitoba, John Biczok, and Tony Smith).

Stephanie Whitehouse, our designer, wanted to try working more with metal and glass on this case, and she asked the workshop to look at ways plexiglas could be prepared to allow it to glow. Bert Valentin considered new lighting options (though he eventually settled on fibre optics similar to those in the Ancient Seas cases) and Marc Hébert had to develop new techniques to build cases using different construction materials. Lisa May and Wayne Switek constructed specimen mounts that look simple but had to hold the specimens just so. And once all the pieces were constructed, it still took the team most of last week to assemble them and make everything fit. Dealing with the giant amethyst (now informally rechristened The Mammothist) was a big piece of this process, so big that I will give it its own post in the near future!

A millerite specimen - a moss like mineral of a dark colour.

This splendid millerite is from Thompson, source of some of the best examples of this unusual nickel mineral. It was acquired for the exhibit by the Mineral Society of Manitoba and The Manitoba Museum Foundation. (catalogue number M-3596)

A view of the entrance way into the Earth History Gallery, with a exhibit of the layers of the earth along the left side wall, and a dramatically lit new display case at the far end showing a selection of mineral specimens.

If you visit the Gallery you will still see the old exhibits between the mineral cases and Ancient Seas, but the space is starting to develop quite a different feel.

Close-up on the gallery name Earth History Gallery on the wall at the entrance to the gallery.

For the first time ever, the Earth History Gallery has a title!

Replicating rex

By Dr. Graham Young, past Curator of Palaeontology & Geology

 

The Manitoba Museum is home to many unusual and unique specimens. Among the most remarkable is the world’s largest complete trilobite, the holotype specimen of the species Isotelus rex. Over the years we have occasionally received requests from other museums for replicas of this striking fossil.

More than a decade ago, before the specimen ever went on exhibit, we had a mould prepared by an outside contractor who also made a number of resin replicas. These were on the shelf and ready to be painted if an order arrived. But eventually those replicas ran out, and when a new order came in from a museum in Japan last year, it was discovered that the original mould was too old and worn to be used again. A new mould was needed, which meant that we would have to remove the specimen from its exhibit in the Earth History Gallery.

A large oblong fossil specimen of a trilobite.

The holotype of Isotelus rex, MM I-2950

A display case containing  a large fossil trilobite specimen along with a fossilized trackway.

The I. rex type specimen, on exhibit with a trackway and other trilobite material.

So we pulled out the case, carefully slid out the fossil (this is tricky, because it weighs about as much as I do!), and wheeled it away to the artists’ studio to be worked on by Debbie Thompson and Betsy Thorsteinson. While the specimen was “on leave” from the exhibit, it was temporarily replaced by one of the existing replicas.

The following photos are Betsy’s documentation of the complex and fascinating replication process. Our artists are tremendously skilled, as indicated by the high quality of work in so many of our galleries, and by the attention to detail in the preparation of these perfect trilobite replicas.

A fossil specimen on a work table encased in latex and cheesecloth.

First, the fossil specimen was coated with layers of latex to precisely replicate its surface. This was strengthened with cheesecloth.

A fossil specimen on a work table encased in a white plaster jacket with two piece of wood bracing the top portion.

A plaster jacket was built up over the latex, and braced with wood.

The formed mould placed upside down on a work table as an individua; wearing a white lab coat, blue gloves, a respirator, and safety glasses uses a paint brush to apply a coat of mould separator on the interior.

Once this had dried, the mould was pulled from the fossil. Debbie painted a layer of mould separator onto the latex prior to casting.

An individual wearing a white jumpsuit, blue gloves, a respirator, and safety glasses leaning over holding a drill with a mixing bit into a basin of polyester resin.

Polyester resin had to be mixed very quickly, as it begins to set within minutes!

An individual wearing a white jumpsuit, blue gloves, a respirator, and safety glasses applies resin with a paint brush on the inside of the large mould.

The resin was applied to the mould.

Fibreglass layered along the interior base of the mould.

Fibreglass was layered in to strengthen the cast.

Lightweight foam filling the form of an upside-down mould. The open end of an air ventilator hangs above the mould.

As a solid resin cast would be extremely heavy, the interior was filled with lightweight foam.

A flat coat of resin on the top of the trimmed foam within the mould. The open nozzle of an air vent hangs above on the left side.

After the foam had been trimmed down, a resin coat was applied to the back of the replica.

Two individuals, both wearing black t-shirts and blue jeans, stand either side of a work table peeling a flexible latex layer off of a replica fossil trilobite specimen.

Bob Peacock and Marc Hébert peeled the latex from the replica.

An individual wearing a white smock paints a beige base coat on a large model trilobite specimen. Further back on the work table is the original trilobite specimen.

Debbie applied the first coats of paint to the replica. Note that the original specimen was nearby for reference.

An individual leans over a work table, painting a large model trilobite specimen. On their right side is the original trilobite specimen and they use their right hand to cup the portion they're replicating on the left.

Painting of the replica was almost finished. As Debbie says, “The detail work takes a lot out of you. I cup it like this to keep my spot while painting.”

An individual traces a large fossil trilobite replica onto brown paper placed beneath it.

Debbie traced the finished replica onto brown paper, so that a precisely fitted crate could be prepared.

The replica carefully encased in a packing crate.

The crated replica, ready to be shipped to Japan!

Congratulations to Ed!

By Dr. Graham Young, past Curator of Palaeontology & Geology

 

Ed Dobrzanski is a “fixture” at the Museum. He had been a volunteer here before I started back in in 1993, and he has volunteered continuously for the past 20 years. Ed has done tremendous work as an amateur paleontologist, collecting, preparing, studying, identifying, and cataloguing fossils. He has contributed to paleontological field and laboratory work in a great variety of ways. For his all-round efforts, many of us are delighted that Ed has just been named as the recipient of the Katherine Palmer Award, a North America-wide award for amateur paleontologists, presented annually by the Paleontological Research Institution.

An inveterate collector with interests in a great variety of objects, Ed had a long career as a government meteorologist. When staff reductions resulted in an opportunity for early retirement, Ed took advantage of this to turn his volunteer work into a daily avocation. In his time here, Ed has contributed tremendous knowledge to the organization of fossil collections as varied as brachiopods (lamp shells), fishes, and bivalves. He has also donated many specimens to the Museum (and to other institutions such as the Royal Ontario Museum), has contributed to exhibit development and public programs, and assists with all sorts of tasks in other departments of the Museum!

An individual wearing a jacket fully zipped, with hood up, and a backpack stands next to a rocky dune.

My colleagues and I are fortunate to have Ed as a collaborator on many research projects. He is skilled with the essential field and laboratory tools: whether using a hammer, GPS, shotgun, survey equipment, microscope, rock saw, or lapidary grinder, Ed has considerable expertise. He takes wonderfully precise notes, understands maps thoroughly, and maintains a compendious knowledge of obscure fossil localities. Ed has been a key member of my field teams, and has also collaborated in the field with many other scientists such as Bob Elias (University of Manitoba), Dave Rudkin (ROM), Jisuo Jin (University of Western Ontario) and Jan Audun Rasmussen (Natural History Museum of Denmark). His efforts have resulted in the co-authorship of several papers, a guidebook, and many conference abstracts.

 

Image: Ed suffering through spring snow and winds, during fieldwork on the Grand Rapids Uplands.

Two individuals standing either end of a work table with a number of specimens laid out across it.

Florence Zawislak (L) and Ed discuss a cartful of specimens.

Two individuals standing in front of a large rocky wall.

Ed assisted visiting Danish researcher Dr. Jan Audun Rasmussen, who carried out field research in southern Manitoba.

Ed Dobrzanski is a tremendous asset to the science of paleontology in Manitoba and beyond; it is wonderful to see this recognized!

Display of Detritus and Delight

The spaces that house Museum curators and collections are, perhaps, notorious for appearing to be crammed full of objects. Our work consists of collecting and organizing, and actively-collecting Museum scientists typically have many specimens spread out for study and cataloguing. Our collections rooms contain many thousands of well-organized specimens, but it is tricky to find space for the largest pieces. For this reason, some of our biggest specimens are not stored in the official Natural History storage: ever since I have worked at the Museum, most of our large mammal mounts have been in alcoves along the hallways here. If I wish to, I could say “good morning” to two muskoxen, a grizzly bear, and two mule deer just in the short space between the elevator and my office!

It used to be that, when the elevator stopped at our floor, those inside would glance out to see our creatures, safe in their protective plastic cocoons. Although this may be an interesting sight (if you know what they are), it is hardly a fitting introduction to the great variety of activities here, and it made it look rather like a warehouse. A few years ago, we decided to remedy this; when an old display case came available in the Museum basement, we grabbed it and placed it facing the elevator to house an introductory exhibit.

A replica of a fossil specimen in a display case positioned in front of three animal skulls.

A replica ichthyosaur rests behind a variety of skulls: a large fish, a coyote, and a beaver.

Close up in a display case showing a number of mineral specimens and two red boxes labelled "dino stones".

A grouping of minerals, Tyndall Stone, fossil ammonoids, and bird gravel and “dino stones” (our idea of what pet products would look like if people kept dinosaurs!).

This display has taken years to develop, because we were always getting sidetracked with our real work! We placed a few items into the case right after we moved it, but then it sat untended for some time. Returning to the case a couple of years ago, we added a lot of interesting pieces and planned to include a title explaining what it was about, but again we of course became busy with projects such as the Biodiversity and Colours in Nature exhibits. Then, this past week, we finally managed to “finish” this display, at least for the moment, adding a title panel and several of the wonderful Haeckel posters that had been included in the Biodiversity exhibit.

A replica fossil of a pterosaur in stone.

This replica pterosaur was beautifully painted by Debbie Thompson.

A specimen display case positioned in front of a specimen freezer and next to a mounted muskox specimen on a wrapped cart.

This angled view of the case shows how it is surrounded by large mammal mounts (under the plastic, that is a muskox on a cart), with a specimen freezer behind.

What is the purpose of this case, and why have we decided to feature the particular items that are in there? As well as providing “eye candy” for those who happen to see it from the elevator on their way to other floors, we wanted the case to introduce the basic research and collecting disciplines that occupy this floor: Zoology, Botany, and Geology/Paleontology. Since it is not climate-controlled, and is subjected to dust, light, and vibration, all the items in it are robust. They are generally replicas or are from the stores of “teaching grade” objects lacking basic data.

Although the choices were limited, we were pleased that we could include some of our favourite sorts of items (an ichthyosaur replica, a box of fake “dino stones”), and examples of things related to some of the research that takes place here (Tyndall Stone fossils, snake skin). Undoubtedly the display will continue to evolve in the coming years as we come upon other suitable exhibits for it!