The word "ustarasite" is spelled as /ʌsˈtærəsaɪt/. This is a rare geological term referring to a mineral that forms from volcanic gases. The letter combination "s-t-a-r" is pronounced as /stær/ and the ending "-asite" is pronounced as /əsaɪt/. The vowel sound in the first syllable is pronounced as /ʌ/ which is similar to the "uh" sound in "hut". Pronouncing words using IPA phonetic transcription can help with accurate spelling and pronunciation.