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- Porphyritic Granite Specimen, Pack of 12
Porphyritic Granite Specimen, Pack of 12
A specimen of porphyritic igneous rock showing two distinct crystal sizes, the result of magma cooling slowly at first and then quickly. It is used in classroom studies of plutonic petrology.
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- Pack of 12 (PK)
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Other sizes & packs
3 variants in this rangeA specimen of porphyritic igneous rock showing two distinct crystal sizes, the result of magma cooling slowly at first and then quickly. It is used in classroom studies of plutonic petrology.
| Cat. No. | GEO-04-Z12-9000-013 |
|---|---|
| Category | Rocks and Minerals / Igneous Rocks / Intrusive (Plutonic) Igneous Rocks |
| Subject | Earth Science |
| Pack size | Pack of 12 (PK) |