Ellipsoid rotation helps your block model follow the shape of the ore body. It’s especially useful for steep, plunging deposits, making grade estimates more accurate and continuous. When you define an ellipsoid, the block model aligns along the ellipsoid, so when you estimate grades, the search naturally follows the ore body.
It is wiser to use structural data or variograms to pick the ellipsoid orientation and size and preview your model to ensure the ellipsoid lines up with the mineralization.
You then need to choose the ellipsoid of rotation, select the search you have created, and run it as you normally would.
If you’re rotating by angles instead. Bear in mind that all rotation are left-handed.
Ellipsoid rotation is the best choice for angled or plunging deposits, keeping your model aligned with reality and improving estimation results.
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