Construct · 2 fields · 2 citations

Where does parting collide?

One name. Different field. Different construct. One map.

● jingle · one word, two carriers Nearest construct by meaning·not indexed
parting2 CONSTRUCTSMineral partingWANG · MINERAL PARTINGParting lineMAJHI · PARTING LINE

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1999Parting line2025Mineral parting
2026

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Mineralogy

Breakage of a mineral along planes of structural weakness (e.g. twin or exsolution planes).

In mineralogy, parting is the tendency of a mineral to break along planes of weakness that are not cleavage, such as twin composition planes or exsolution lamellae, and so is not a property of every specimen of a species. Wang (2025), in the Manual of Mineral Material Science, treats cleavage, fracture, and parting together as the ways a mineral breaks, distinguishing parting from true cleavage. Here parting is a mode of mineral breakage, not the split line of a mould.[1]

Unit
One set of parting planes along which a crystal separates.
Recovery means
Look for smooth breakage along specific planes present only in some specimens (twin or exsolution planes).
Measured by
Observed on broken crystals and related to twinning or exsolution.

Manufacturing

The line or surface along which a mould separates to release the cast part.

In casting and moulding, the parting line (or parting surface) is where the two halves of a mould meet and separate so the finished part can be removed without undercuts trapping it. Majhi, Gupta, and Janardan (1999), in Computational Geometry, give an algorithm for computing a flattest, undercut-free parting line for mould design, treating parting as a geometric constraint on manufacturability. Here parting is the split plane of a mould, not the breakage habit of a mineral.[2]

Unit
One parting line or surface dividing a mould into separable halves.
Recovery means
Find the plane where a mould splits to release the part without undercuts.
Measured by
Determined geometrically from the part's shape and draw direction.

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Nearby collisions

break2 fields · 4 citationsjingle · one word, two constructscleavage3 fields · 3 citationsjingle · one word, three constructscomposition3 fields · 3 citationsjingle · one word, three constructs

References

  1. Wang, L. (2025). Cleavage, fracture, and parting of minerals. In Manual of Mineral Material Science (pp. 70-75). Springer Nature Singapore. https://doi.org/10.1007/978-981-97-7558-3_16
  2. Majhi, J., Gupta, P., & Janardan, R. (1999). Computing a flattest, undercut-free parting line for a convex polyhedron, with application to mold design. Computational Geometry, 13(4), 229-252. https://doi.org/10.1016/s0925-7721(99)00023-1

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