| 1. | Spinels in the groundmass suggest that crustal contamination was extensive.
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| 2. | Because their groundmass is generally amorphous in structure, fulgurites are classified as mineraloids.
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| 3. | The alkali feldspar is confined to the groundmass.
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| 4. | The phlogopites are the glittering minerals surrounded by the green groundmass of olivine . ]]
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| 5. | Near the groundmass, which indicates the mounds may have been formed of till originally.
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| 6. | The dacites contain phenocrysts of biotite and large feldspar crystals embedded in an oxidized groundmass.
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| 7. | "Clavulinopsis " has an free aggulinated test with a considerable calcareous groundmass.
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| 8. | The groundmass contains plagioclase, pyroxene, silicon dioxide and oxides of iron and titanium.
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| 9. | Resorbed olivine macrocrysts and euhedral primary crystals of groundmass olivine are common but not essential constituents.
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| 10. | The primary crystallized and fast crystallized calcites form phenocrysts and fine-grained groundmass, respectively.
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