The “Seed Crystal Event” in the Mines and Deposits within the Herkimer Mining District
The “seed crystal event” in the Herkimer Mining District is an important step in the process of making Herkimer
diamonds. The “Oil and Seed Crystal Theory” combines two elements suggesting that both oil bearing fluids and
quartz bearing fluids interacted within the Herkimer Mining District to help create Herkimer diamonds.
Click on the button next - to see Herkimer diamonds
See more evidence of the
intereaction between quartz and
The “Seed Crystal Event”
Why is it important?
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In order to grow Herkimer diamonds the
solutions carrying the dissolved materials,
that would eventually become Herkimer
diamonds, needed some place where the
growing could start. It is quite hard to
grow quartz in a rock that is mostly oil
covered dolomite. There is no place to
start (nucleation site) the actual growing
of Herkimer diamonds .
But… if there are very tiny little Herkimer
diamond like quartz crystals being carried
in solution, before the large episode of
Herkimer diamond growth, then these
very tiny Herkimer diamonds can act as
sites for growing the larger Herkimer
diamonds. Small Herkimer diamonds are
common, by the thousands, across the
district. Tiny ones might be in the millions!
Seed Crystal Evidence: In the slide show above there will be more evidence showing the very consistent presence
of seed crystals. This evidence will include the large presence of the little 5 to 10 mm little Herkimer diamonds that can fill
up your palm (like the photo on the right), something so common across the district that it must have a connection to the
History of Herkimer Diamonds. But the evidence will go beyond this - to show that the seed crystal event was a unique
event that occurred prior to making Herkimer diamonds and that it has many different variations. The evidence shown in
the July talk in Herkimer, NY 2016, presented the discovery of crystal frost which for some Herkimer diamonds acted as
“seed crystals”. There is also evidence of very tiny crystal (less than 1/10th mm) that may have accompanied the crystal
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by W. David Hoisington, Ph. D. unless another author/photographer is cited.
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Thank you Shannon Haley
Wilbur for the donation of 30
samples from the Fonda
region.1/05/2019 and 3/2/2019
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