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Grypania Spiralis (GRY2)
Notes specific to this specimen: Nice cabinet specimen showing several nice segments of Grypania with the classic curving arc formed by this species. Some segments show great examples of what’s been described as “desiccation” of the outer sheath along its length. This results in impingement of the sheath between individual cells, giving it a “bumpy” appearance. The desiccated segments are very rare.
SIZE: 4″ x 5″ x 0.75″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$6,500.00Grypania Spiralis (GRY2)
$6,500.00 -
Crystal Clam Wall (OKW7)
Notes specific to this specimen: One of a kind unbelievable specimen! This was dug out in 2023 as several pieces that have been reconstructed into a continuous matrix piece with breathtaking beauty. This is the largest crystal clam matrix specimen in the world. There are over 50 crystalized fossil clams, two crystalized conchs, along with scallops, olive shells, welks, corals and hundreds of other fossil shells in this magnificent museum piece.
HOW THEY FORMED
The area around Lake Okeechobee, Florida was a shallow sea about 2 million years ago. These clams lived in the sandy mud near the shoreline at the time. Sudden storm events – such as hurricanes and tropical storms – periodically buried the area under deep sediments, trapping the clams and other shellfish that lived there. As their bodies decayed, the process left behind cavities in the shells. With the heat and pressure that accompanied the pile-up of sediments, the original shell material (aragonite) became unstable and began to dissolve away. As it happened this provided the elements necessary to grow pure calcite crystals in the open spaces within some of the shells. It has a sturdy backing of plywood with an aluminum frame allowing this piece to be hung either vertically or horizontally. It’s currently on display at 1889 Studios, in the Uptown Rapid (formerly Rushmore Mall) complex in Rapid City, SD. Contact us for shipping options.SIZE: 3′ x 6′ x 10″
NAME: Mercenaria permagna
AGE: Plio-Pleistocene – 2 million years
UNIT: Nashua Formation
SITE: Okeechobee County, Florida
DATE: 2023Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an informative display card accompanies the specimen
$12,500.00Crystal Clam Wall (OKW7)
$12,500.00 -
Grypania Spiralis (GRY12)
Notes specific to this specimen: An absolute stellar specimen! There were only a few specimens recovered that showed such abundance and contrast. This particular horizon we called “Grypania Heaven” due to its stellar appearance. This super-rich slab is populated with dozens of showy and very distinct Grypania, many with characteristic curvature and arcs. In addition, some of the specimens have desiccation distortion along the sheath
SIZE: 3″ x 5″
NAME: Grypania spiralis
AGE: Paleoproterozoic Era / 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Empire Mine, Palmer, Michigan$12,500.00Grypania Spiralis (GRY12)
$12,500.00 -
Thunder Bay Amethyst (TBA101) “The Big Kahuna”
Notes specific to this specimen: This is one of the most incredible amethyst specimens ever found anywhere. Truly gigantic crystals of deep purple. This 44-pound kahuna is unlike any other. It was discovered by us in Thunder Bay during the Pacific GeoLab (PGL) expedition there in September 2021. We’ve been displaying it ever since. These massive crystals with deep purple body have a unique final cap of smokey quartz. There are three primary and one secondary crystal termination points.
All sides of the piece are naturally shiny and show striations of the crystal growth stages. The crystal terminations are a complex of interlacing smokey quartz that is quite rare, especially in this region. Almost all large crystals of Thunder Bay amethyst have opaque red or off-white terminations. Translucent purple or smokey terminations in such gigantic crystals is extremely rare. Here, however, the primary crystals end with purple points topped by smokey caps, a doubly-rare discovery. Smokey quartz is rare in this mineralogical province, never mind the fact it is crowning these gigantic deep-purple crystals. The smokey crowns are about ½ inch in thickness overtop their host points below.
There are no alterations or reconstructions to the piece. It is completely natural. There has been no cutting, grinding, or polishing, and no treatments to enhance the colors. The specimen is authentic, and unaltered in any way. These are some of the largest amethyst crystals ever found in North America making this a one-of-a-kind museum specimen.
SHIPPING: If you cannot pick up the specimen in person, additional crating and shipping charges will apply. The piece will ship from our lab in California.
SIZE: 16″x 10″x 10″
Name / Species: Quartz, variety Amethyst
Age: Mesoproterozoic Era – 1.1 billion years
Unit: Archean Granite (unassigned formation)
Site: Diamond Willow Mine, Pearl, Ontario, Canada
Collected:
Collected by: Jon and JulieDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$12,800.00
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