RE:RE:RE:RE:RE:RE:RE:RE:RE:RE:Let's speculate Defining what jewellery boxes actually are, and are not - They are not defined as a high grade intercepts of a C-Structure. While mining at Sigma, jewellery boxes were defined as intersections inside the intrusive between the shears and the riedel's.
From Salamas when he worked as a geologist at the Sigma mine: “When we were mining at Sigma, the intersections between the shears and the riedel's were like jewellery boxes — there would be gold hanging off the walls underground,” he said. “There’s no way to know they were there until you drifted into them, because they have limited strike and volume. When we drifted into one, the mine captain would come down, seal it off, put up a big padlock door and lock off the stope. You can literally make up a month’s work of production just from one of these stopes by sending a guy in there with a bucket and a hammer.”
In summary:
There's was no way to know they were there until you drifted into them, whereas they were then notably visible akin to opening a door to a gold filled room.
There occurrences are limited to only within the intrusive where riedel's and shears intersect, (70+% of all Triangle's mineralization occurs outside the intrusive).
Hope this helps. GLTA