biotite schist meaning in Hindi

• ऐल्बाइट-बायोटाइट शिस्ट • बायोटाइट शिस्ट

biotite: काला अभ्रक
schist: अभ्रक-शिस्ट ऑगन

In 2012, further studies of detrital zircons taken from quartz-biotite schists in the NGB reported a maximum age of 3780 Ma.