ðə ɹˈɑːk ɪz ʌv ˈɪntɹɛst tə dʒɪˈɑːlədʒˌɪsts ˌæzɪtˌɪz ɐ fˈaɪn ɛɡzˈæmpəl ʌv kwˈɔːɹts skˈoːɹl; ɐ fˈʊli tˈʊɹmɐlˌɪnaɪzd ɡɹˈænɪt, wɪð blˈæk tˈʊɹməlˌaɪn kɹˈɪstəlz.
The rock is of interest to geologists as it is a fine example of quartz schorl; a fully tourmalinised granite, with black tourmaline crystals.