Sample Type is Metamorphic › Metamorphic Structures › Porphyroblasts
3 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD02AFS0 | Porphyroblasts | Cubes of pyrite and chalcopyrite in grey cryptocrystalline matrix. | Fremont Isle | 0 | Ritter 154, 24 H |
| GRD02AOS0 | Porphyroblasts | Tremolite-biotite-muscovite schist to gneiss. Large books of biotite (porphyroblasts) in the schist. Tremolite-quartz boudins in gneiss. Original label: Hornblende-carbonate. | 1 | Ritter 154, 14 O | |
| GRD02TAS0 | Porphyroblasts | Staurolite-Garnet Schist. Large Staurolite porphyroblasts(1-2 cm) with garnets(~1 mm), micaceous. Unknown origin. | 0 | Ritter 154, 14 O |