TX46AB3: Olive-green Tangeite microcrystals on an aggregate of Malachite crystals pseudomorphous after Azurite. The sample, representing the best known for this rare copper and calcium vanadate, has been analyzed, the result that Tangeite is a new species for Milpillas.
We will send a copy of the analysis to the buyer.
This specimen has been reviewed and published in the special "Milpillas" of the magazine ‘Lapis’ number 07-08/2017, page 36 and in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 615 in the volume 52, number 5, September-October 2021
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 19.3 × 13.5 × 5.2 cm = 7.60” × 5.31” × 2.05”