Abstract
Octahedral graphite aggregates are present in garnet pyroxenites from the Ronda peridotite massif, southern Spain. In the aggregates, basal {0001} planes of graphite are parallel to {111} of the octahedra, demonstrating that the graphite is pseudomorphic after a cubic mineral. The aggregates contain clinopyroxene inclusions that have a morphology atypical of a monoclinic phase demonstrating that the precursor diamond has imposed a cubic symmetry. A tectonic model is proposed to explain how diamond-facies rocks were emplaced into the crust on both sides of an orogen. -from Authors
| Original language | English |
|---|---|
| Pages (from-to) | 471-474 |
| Number of pages | 4 |
| Journal | Geology |
| Volume | 21 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 Jan 1993 |