Rio Grande do Sul, South Region, Brazil

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Analcime : Na₂[Al₂Si₄O₁₂] · 2H₂O
	Incopel quarry, Estância Velha, Rio Grande do Sul, South Region, Brazil Sample crystallized with 6x4,5x3,5cm (crystals up to 8mm) - October of 2004
© Martins da Pedra	Photo ID: 46527 View Count: 325
Analcime : Na₂[Al₂Si₄O₁₂] · 2H₂O
	Incopel quarry, Estância Velha, Rio Grande do Sul, South Region, Brazil White analcime crystals up to 7 mm on basalt matrix. Overall specimen size 7 x 5 x 3,4 cm Marek Patúš photo & collection #1139
© Marek Patúš	Photo ID: 234418 View Count: 37
Anhydrite : CaSO₄
	Planalto, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil Sample crystallized with 8x4x3cm (crystals up to 2,5cm) - May of 1995
© Martins da Pedra	Photo ID: 42242 View Count: 542
Anhydrite : CaSO₄
	Rio Grande do Sul, South Region, Brazil A beautiful group of light beige Anhydrite blades on a bed of pale Amethyst. The blades range up to 4 cm. long. The overall piece is 13.2 x 8.5 cms. Photo and collection of Lee Johnson.
© Lee Johnson	Photo ID: 196128 View Count: 154
Anhydrite : CaSO₄
	São Gabriel, Rio Grande do Sul, South Region, Brazil Anhydrite. Vasco Trancoso collection and photo. Size: 11cm X 6cm X 6,5cm. Aesthetic fan shaped cluster with crystals up to 5cm.
© vasco trancoso	Photo ID: 186774 View Count: 135
Apophyllite, Albite : Na[AlSi₃O₈]
	Rio Grande do Sul, South Region, Brazil Several pale green apophyllite crystals on albite from Rio dos Antas region. Collection of Charles Creekmur.
© Charles Creekmur	Photo ID: 17554 View Count: 597
Apophyllite
	Veranópolis, Rio Grande do Sul, South Region, Brazil Another rare specimen out of the collection of mineral legend Fred Pough, this is a BRAZILIAN apophyllite, and a very fine one at that, with sharp, translucent-to-transparent crystals to 2.4 cm. This material is vanishingly rare on the market now, and therefore highly desirable! 3.9 x 3.7 x 3.0 cm
© Rob Lavinsky	Photo ID: 70862 View Count: 364
Apophyllite
	Veranópolis, Rio Grande do Sul, South Region, Brazil Pale green apophyllite with a needle-shaped zeolithe (natrolite?). Location on the label says "Das Antas Tunnel". Specimen size 12.1 x 8.6 x 5.5 cm.
© Christian Bracke	Photo ID: 108860 View Count: 218
Calcite : CaCO₃
	Iraí, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil A GORGEOUS and pristine radiating CABINET spray of lustrous, translucent and colorless wheatsheaf calcite crystals on matrix from Irai, Brazil. Far better than the usual Brazilian calcites that you see. Large and impressive specimens! 13.4 x 10.5 x 6.5 cm
© Rob Lavinsky	Photo ID: 20188 View Count: 535
Calcite : CaCO₃, Quartz (Var: Amethyst) : SiO₂
	Iraí, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil Main crystal size: 3.5 cm. P Haas photograph and collection (no. 52-021).
© Peter Haas	Photo ID: 14433 View Count: 497