Rocks, Minerals, Collectibles, Geology
These specimens are primarily quartz with a sprinkling of pyrite. Most specimens have two generations of quartz, the large main crystals and an overgrowth of small quartz crystals, mostly around the base of the main crystals. Most pieces have a sprinkling of small pyrite crystals.
Page 15, Quartz with pyrite, Pasto Bueno Mine, Pallasca Province, Ancash Department, Peru
CR 1544: Quartz, Pasto Bueno, Peru: 11.2 cm x 4.2 cm x 3.2 cm, 270 grams. $95. Nice large doubly terminated quartz with a sprinkling of pyrite near the base. The main termination has very minor edge wear and there are a couple tiny dings along the edges. The other end has multiple terminations. There is damage to one of the sidecar crystals that does not significantly detract from the overall specimen. The pyrite crystals are small, but add nice contrast.
CR 1546: Quartz, Pasto Bueno, Peru: 4.7x cm x 3.6 cm x 2.6 cm, 24.4 grams. $18. A nice miniature with a nice sharp termination on the main crystal and the smaller one which juts out at an angle. Second generation quartz and a nice amount of pyrite make this a very cute specimen. Stands up nicely.
CR 1547: Quartz, Pasto Bueno, Peru: 5.5 cm x 5.0 cm x 2.5 cm, 48.5 grams. $45. Note there are actually three main crystals in this cluster and the larger one, on the left, was broken while in the pocket as evidenced by an overgrowth of quartz on the broken surface. Similarly, this piece is broken off at the base, with quartz overgrowths on the broken surface. There are abundant very fine second generation quartz crystals and a light sprinkling of pyrite. Crystallized all the way around. Sits nicely for display.
CR 1545: Quartz, Pasto Bueno, Peru: 8.4 cm x 3.0 cm x 2.8 cm, 96 grams. $55. A very nice cluster, 2 of the main crystals are very clear (one not visible) and one (upper) is 'frosted'. There are numerous second generation quartz crystals and abundant pyrite. The base (left) has minor regrowth on it suggesting it was broken in situ.
CR 1548: Quartz, Pasto Bueno, Peru: 4.7 cm x 4.0 cm x 2.0 cm, 30.2 grams. $15. A sweet miniature with abundant second generation quartz including regrowth on basal surface. A nice sprinkling of pyrite. The smaller crystal on the left is broken off.
CR 1554: Quartz, Pasto Bueno, Peru: 4.3 cm x 3.7 cm x 2.8 cm, 47.5 grams. $23. A nice fat cluster with a few needles of hubnerite. No damage other than the base where removed from the matrix. This piece needs a little help to stand up.
CR 1549: Quartz, Pasto Bueno, Peru: 6.9 cm x 2.5 cm x 2.0 cm, 63.4 grams. $12. A nice fat single crystal with abundant second generation quartz around the base. Broken off at the base, just a trace of pyrite.
CR 1550: Quartz, Pasto Bueno, Peru: 4.5 cm x 4.1 cm x 5.3 cm, 69 grams. $45. A very nice cluster with abundant second generation quartz and a nice amount of pyrite. A good example of how the second generation quartz and pyrite all formed on one side. Sits nicely on the base, which is also partially recrystallized after breaking off. Excellent all around.
CR 1563: Quartz, Pasto Bueno, Peru: 8.2 cm x 4.0 cm x 3.7 cm, 107 grams. $35. A nice small cabinet combo with abundant sulfides. Contacted on the bottom and back. I considered sawing off the base of this and can do that if you would prefer it that way to make it stand better and get rid of a little of the excess quartz at the base.