Processed slabs, and systems and methods related thereto

A processed slab formed from a plurality of particulate mineral mixes deposited into a mold, comprising:

• a slab width that is at least 2 feet, a slab length that extends perpendicular to the slab width and that is at least 6 feet, and a slab thickness that extends perpendicular to the slab width and the slab length, the slab length greater than the slab width, the slab width greater than the slab thickness;
• a first predetermined pattern defined by a first particulate mineral mix and comprising a set of slab veins exposed along a major surface of the slab, the set of slab veins comprising:
• a first vein in a generally first direction along the major surface, the first vein having a first vein thickness defined by the first particulate mineral mix, a first overall length along the first direction, and a first maximum width on the major surface,
• a second vein in a generally second direction along the major surface, the second vein having a second vein thickness defined by the first particulate mineral mix, a second overall length along the second direction, wherein the second overall length is less than the first overall length;
• a third vein in a generally third direction along the major surface, the third vein having a third thickness defined by the first particulate mineral mix,
• wherein the first vein in the generally first direction intersects the second vein in the generally second direction, and the third vein in the generally third direction intersects the first vein;
• and
• a second predetermined pattern defined by a second particulate mineral mix that occupies the entire slab thickness;
• wherein the first and second mineral mixes are different and each comprise quartz, a pigment, and one or more binders, the first particulate mineral mix absent from the second predetermined pattern and the second particulate mineral mix absent from the first predetermined pattern.