"Thalfenisite" is a rare mineral that was first identified in 1975. Its spelling may seem confusing at first glance, but it can be explained using the International Phonetic Alphabet (IPA). The first syllable, "thal," is pronounced like "thal" in "thalamus." The second syllable, "fen," is pronounced like "fen" in "fence." The third syllable, "i," is pronounced like "eye." The final syllable, "site," is pronounced like "site" in "website." So, the IPA transcription of "thalfenisite" would be /ˈθælfənɪsaɪt/.