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Describe the bug
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Gneiss Slab is untextured when broken, also Gneiss Wall has untextured particles
To Reproduce
Steps to reproduce the behavior:
Break Gneiss Cobble Slab, entity is untextured. Particles on Gneiss wall are untextured when breaking.
Expected behavior
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Screenshots
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Info (please complete the following information):

• Modpack Version: Latest (as of 4/2/20)
• Server or Singleplayer: Singelplayer
• Version the world was created on: Latest (as of 4/2/20)

Additional context
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Duplicate of #92