Processed slabs, and systems and methods related thereto

1. A process of forming a processed slab having a width of at least 3 feet and a length of at least 6 feet and a slab thickness that defines a vertical orientation, the process comprising:

dispensing a first pigmented particulate mineral mix comprising predominantly quartz onto a planar surface through a stencil into a first set of regions using a first distributor while horizontally oriented occluded regions and vertically oriented walls of the stencil prevent dispensation of the first pigmented particulate mineral mix into a second set of regions, wherein the occluded regions of the stencil define a vein pattern;

after dispensing the first pigmented particulate mineral mix, dispensing a second pigmented particulate mineral mix comprising predominantly quartz onto the planar surface into the second set of regions, the second set of regions different than the first set of regions;

vibrating and compacting the pigmented particulate mineral mixes on the planar surface to form the processed slab having a slab thickness and a major surface that is generally rectangular with the width of at least 3 feet and the length of at least 6 feet.

2. The process of claim 1 , wherein the vein pattern comprises a first vein in a generally lengthwise direction and a second vein in a generally widthwise direction.

3. The process of claim 2 , wherein the second vein extends across an entire width of the slab.

4. The process of claim 2 , wherein the first vein in the generally lengthwise direction intersects the second vein in the generally widthwise direction.

5. The process of claim 2 , wherein the stencil includes an outer frame that surrounds the occluded regions.

6. The process of claim 3 , wherein the vein pattern is at least partially defined by first and second opposing vertically oriented walls extending parallel to the slab thickness.

7. The process of claim 6 , wherein the stencil comprises the first and second opposing vertically oriented walls extending parallel to the slab thickness.

8. The process of claim 2 , wherein a thickness of the vertically oriented walls of the stencil is greater than the slab thickness.

9. The process of claim 1 , wherein dispensing a second pigmented particulate mineral mix comprises dispensing the second pigmented particulate mineral mix using a second distributor, the second distributor comprising a dispensing head having a width that is less than a width of the second set of regions.

10. The process of claim 2 , wherein dispensing a second pigmented particulate mineral mix comprises dispensing the second pigmented particulate mineral mix using a second distributor, the second distributor comprising a means for controllably releasing the second pigmented particulate mineral mix into the second set of regions.

11. The process of claim 1 , wherein the dispensing of the second pigmented particulate mineral mix comprises dispensing the second pigmented particulate mineral mix through a second stencil.

12. The process of claim 1 , wherein the first pigmented particulate mix at the first set of regions is completely unmixed with the second pigmented particulate mix at the second set of regions after vibrating and compacting the pigmented particulate mineral mixes.

13. The process of claim 2 , wherein the first pigmented particulate mineral mix occupies an entire slab thickness extending perpendicularly to the major surface at the first set of regions, and the second pigmented particulate mineral mix occupies the entire slab thickness at the second set of regions that collectively provide a second vein pattern.

14. The process of claim 13 , further comprising dispensing a third pigmented particulate mineral mix comprising predominantly quartz on at least one of the first or second pigmented particulate mineral mixes, wherein the third pigmented particulate mineral mix comprises a vein that does not extend through the entire slab thickness.

15. The process of claim 1 , further comprising, before dispensing a second pigmented particulate mineral mix, removing the stencil to expose the second set of regions.

16. The process of claim 1 , wherein vibrating and compacting the pigmented particulate mineral mixes comprises compressing the pigmented particulate mineral mixes so that a ratio of the width of the processed slab to the slab thickness is between 36:1 and 72:1, and a ratio of the length of the processed slab to the slab thickness is between 72:1 and 144:1.

17. A process of forming a processed slab from different particulate mineral mixes, comprising:

dispensing a first pigmented particulate mineral mix comprising predominantly quartz onto a planar surface through a stencil into a first set of regions using a first distributor while the stencil prevents dispensation of the first pigmented particulate mineral mix into a second set of regions, the stencil including a plurality of occluded regions and a frame that surrounds the occluded regions;

dispensing a second pigmented particulate mineral mix comprising predominantly quartz onto the planar surface into the second set of regions using a second distributor, the second pigmented particulate mineral mix dispensed according to a predefined pattern that defines a pigmented vein pattern, the pigmented vein pattern including a widthwise vein that extends across an entire width of the slab, and the second set of regions being different than the first set of regions;

vibrating and compacting the pigmented particulate mineral mixes on the planar surface to form a processed slab that is generally rectangular and has a major surface with a width of at least 3 feet and a length of at least 6 feet and a slab thickness.

18. The process of claim 17 , wherein the stencil comprises first and second opposed walls oriented parallel to the slab thickness, the predefined pattern at least partially defined by the first and second opposed walls oriented parallel to the slab thickness.