blockDustMalachite = 9 Dusts of Malachite in a Block
blockGemMalachite = 9 Gems of Malachite in a Block
blockIngotMalachite = 9 Ingots of uhhh wait a second Malachite smelts into Copper, so this does not exist. XD
Generally when using things like “blockMalachite” GT6 has a small list of Materials to determine whether its Ingots, Gems or Dusts, and re-registers it accordingly if possible.
As for catapulting Items out of the thing, it does that Clientside too, whenever an Item is submerged in a certain type of Block it will go straight upwards (and towards a closeby open space), people use that mechanic for Item elevators in Vanilla.