The Baptiste deposit is located within the Decar nickel district in British Columbia, Canada and is a promising candidate for a CO₂ sequestration demonstration project. The deposit contains awaruite (nickel-iron alloy) hosted in an ultramafic complex, which is dominated by serpentine [Mg₃Si₂O₅(OH)₄; ∼80 wt.%] and contains reactive brucite [Mg(OH)₂; 0.6–12.6 wt.%]. Experiments were conducted using metallurgical test samples and pulps from cores with the aim of determining the potential for this deposit to sequester CO₂ via direct air capture of atmospheric CO₂ and carbonation using CO₂-rich gas. The experimental direct capture rate was 3.5 kg CO₂/m²/yr and would sequester 17 kt CO₂/yr based on year-round reaction and when extrapolated to the scale of the proposed tailings facility (5 km²). This rate can be increased by ∼5 times (19 kg CO₂/m²/yr) when aerating the tailings and would offset CO₂ emissions by 95 kt CO₂/yr (19–25% offset of projected CO₂ emissions). Experimental carbonation rates with 10% CO₂ gas could achieve offsets of up to 210 kt CO₂/year (42–53% CO₂ offset) based on 1 h reaction times and consumption of 0.8 wt% brucite if present. Targeting brucite-rich ore zones and optimizing CO₂ delivery would likely lead to greater CO₂ offsets.

Baptiste矿床位于加拿大不列颠哥伦比亚省的Decar镍区，是CO ₂固存示范项目的有希望的候选人。矿床中含有超镁铁矿复合物所含的钙镁榴石（镍铁合金），其中蛇纹石[Mg ₃ Si ₂ O ₅（OH）₄ ; 〜80 wt。％]并含有反应性水镁石[Mg（OH）₂；0.6–12.6 wt。％]。使用冶金测试样品和岩心的纸浆进行实验，目的是通过直接捕获空气中的CO ₂并使用CO _2进行碳化来确定该沉积物封存CO ₂的潜力。富含气体。实验的直接捕集率是3.5 kg CO ₂ / m ² / yr，根据全年反应和推断到拟建尾矿设施的规模（5 km ²），将封存17 kt CO ₂ / yr 。该速率可通过〜5倍增加（19公斤CO ₂ /米² /年）充气的尾矿和将抵消CO当₂由95克拉CO排放₂ /年（19-25％投射CO的偏移₂排放）。使用10％CO ₂气体的实验碳酸化率可以抵消高达210 kt CO ₂ /年（42–53％CO ₂基于1小时的反应时间和0.8 wt％的水镁石（如果存在）的消耗。针对富镁铝石矿床区域和优化CO ₂输送可能会导致更大的CO ₂抵消。