wˈʌn sˈʌtʃ pˈɛɡmɐtˌaɪt wʌz fˈɔːɹmɚli ɛksplˈɔɪɾᵻd fɔːɹ ˈɔːɹθəklˌeɪz fˈɛldspɑːɹ æt tɹˈɛseɪz kwˈɔːɹi, ɔnðə sˈʌðɚn ˈɛdʒ ʌvðə vˈɪlɪdʒ ænd nˈaʊ ɐ dʒˌɪəlˈɑːdʒɪkəl nˈeɪtʃɚ ɹɪzˈɜːv ʌv kˈɔːɹnwɔːl wˈaɪldlaɪf tɹˈʌst.
One such pegmatite was formerly exploited for orthoclase feldspar at Tresayes Quarry, on the southern edge of the village and now a geological nature reserve of Cornwall Wildlife Trust.