An attractive historical specimen of Brochantite on Quartz from Blindman Mine, South Australia, as documented on the original collector's label. The specimen features a striking concentration of deep emerald-green Brochantite crystals growing along natural fractures and cavities within a substantial quartz matrix. The Brochantite forms exceptionally fine, needle-like crystals arranged in dense, silky and velvety coatings, with delicate radiating formations visible under magnification. The intense green colour contrasts beautifully with the white to translucent quartz and warm beige-brown tones of the surrounding matrix. The mineralization extends across several faces of the specimen, creating an interesting three-dimensional appearance and revealing the natural growth of secondary copper minerals within the host rock. A distinctive specimen for collectors of Australian minerals, copper minerals and finely crystallized secondary mineral species. The specimen comes from an old private mineral collection and retains its original collector's label. Condition Very good overall collector condition. The emerald-green crystalline coatings are well preserved, with fine fibrous crystal formations clearly visible. The quartz matrix displays natural irregularities, fractures, contact areas and minor edge wear. No obvious repairs or restoration are visible. The delicate Brochantite crystals should be handled with care. Please examine all photographs carefully, as they form an important part of the description.