I also tasted two consecutive vintages of the slate Pinot Noir, and the oldest of the two is the 2016 Aconcagua Costa "Las Pizarras" Pinot Noir, which fermented with 18% full clusters in open vats after a cold soak and had a 20-day maceration. It matured for some 14 months in French barriques, 33% of them new. It has that iodine-like or fresh blood note I associate with schist and iron soils. This seems fresher and more precise than the previous 2015, unlike what I saw in the Chardonnay bottlings. It's nicely textured, with ultra refined tannins that provide some grip and stick to your teeth. 6,500 bottles were filled in May 2017.