Intra-crystal co-variations of carbon isotopes and nitrogen contents in diamond from three North American cratons

Microscale Simultaneous Measurement of Carbon and Nitrogen Isotopes on Natural Diamond

“…The typical δ 13 C value for P-suite diamonds in this region is about -6.2‰ with variable but high [N] (approximately 1300 to 2550 μg g -1 ). In contrast, the E-suite diamonds have more scattered δ 13 C values ranging from -12 to -5.5‰, with [N] less than 800 μg g -1 (e.g., Schulze et al 2008, Van Rythoven et al 2017. Similar ranges in δ 13 C values and [N] are reported by previous studies, suggesting differences in the formation model of the diamond (e.g., Cartigny et al 2001, Cartigny and Marty 2013, Stachel et al 2009a, Van Rythoven et al 2017.…”

“…In contrast, the E-suite diamonds have more scattered δ 13 C values ranging from -12 to -5.5‰, with [N] less than 800 μg g -1 (e.g., Schulze et al 2008, Van Rythoven et al 2017. Similar ranges in δ 13 C values and [N] are reported by previous studies, suggesting differences in the formation model of the diamond (e.g., Cartigny et al 2001, Cartigny and Marty 2013, Stachel et al 2009a, Van Rythoven et al 2017. The δ 15 N values of global P-suite diamonds mostly range from -18 to +12‰ globally with some negative outliers down to -40‰, and for E-suite diamonds, δ 15 N values mostly range from -12 to +12‰ (Cartigny et al 2014).…”

“…2008, Van Rythoven et al . 2017). Similar ranges in δ 13 C values and [N] are reported by previous studies, suggesting differences in the formation model of the diamond (e.g., Cartigny et al .…”

“…2009a, Van Rythoven et al . 2017). The δ 15 N values of global P‐suite diamonds mostly range from ‐18 to +12‰ globally with some negative outliers down to ‐40‰, and for E‐suite diamonds, δ 15 N values mostly range from ‐12 to +12‰ (Cartigny et al .…”