Specimen at a glance
| Mineral | Mixed mineral specimens |
|---|---|
| Chemistry | Varies by piece |
| Mohs hardness | Varies |
| Crystal system | Varies |
| Locality | New Jersey |
| Form | Raw / rough |
| You receive | The exact specimen pictured |
About this specimen
New Jersey’s basalt trap-rock quarries, especially around Paterson and the Watchung Mountains, are among the most historically significant mineral-collecting sites in North America, producing an unusually wide range of species — quartz, calcite, stilbite, prehnite, datolite, and more — often growing together on the same piece of matrix as mineral-rich fluids moved through gas cavities left behind in the cooling lava.
This specimen shows more than one mineral formation visible across the stone, a natural result of that layered geologic history rather than anything artificially combined. It’s a good pick for collectors who enjoy variety and want to study how different minerals interact and grow in sequence on a single piece, rather than collecting single-species specimens.
A solid, affordable way to bring home a piece of New Jersey’s well-documented mineral-collecting history.
Mixed mineral specimens: the science
- Northern New Jersey’s basalt quarries are famous for zeolites, prehnite, calcite, and quartz that grew in old lava gas pockets.
- New York’s Mohawk Valley and Adirondacks add quartz, calcite, and garnet-bearing rock to the region’s variety.
- Mixed lots are a classic way to start a reference collection and practice identification with streak, hardness, and luster tests.
Go deeper
Want the full story on mixed mineral specimens: how it forms, how to identify it, and what makes a great specimen?
Questions about this piece
What is mixed mineral specimens?
This is a collector’s lot of natural mineral specimens from the listed region, a hands-on way to explore several minerals from one area at once.
Where was it found?
This piece comes from New Jersey. We list a locality whenever it is known, because where a mineral formed is part of its story and its value.
How hard is it, and how should I care for it?
Minerals vary in hardness. Store pieces separately so harder ones do not scratch softer ones, and dust rather than wash.
Is this the exact piece I will receive?
Yes. This listing was photographed individually, and you receive the exact piece shown in the photos.
Reviews
There are no reviews yet.