Large sulfur isotope fractionation in lunar volcanic glasses reveals the magmatic differentiation and degassing of the Moon
32S) V-CDT − 1] × 1000, where V-CDT is the Vienna-Canyon Diablo Troilite standard) in lunar samples returned by the Apollo missions ( 21). These studies found that lunar mare basalts, representing a range in major element compositions, have a remarkable uniform whole-rock acid-volatile (extraction with 3 M HCl) sulfur isotope ratios with a mass-dependent mean isotopic composition of δ 34S = +0.58 ± 0.05‰ ( 2). This mean value is within the range measured for carbonaceous chondrites but is heavier than that reported for the Earth’s mantle (δ 34S = −1.28 ± 0.33‰) ( 22), suggestin...
Source: sciencemag.org