Castelinho Mine, Iraí, Rio Grande do Sul, Brazil
The mode of formation and locality are identical to that described later in Lot 87249. The single group of tan Calcite scalenohedral crystals radiate out from a common center with the largest measuring 12.0 cm from tip to double terminated tip. The matrix is the undulating and irregularly surfaced lava on the interior with a strange white fibrous mineral encrusting most of the interior with the exception of the Calcite, which is untouched and lustrous. This very aesthetic example of Calcite from the Castelinho Mine is in excellent condition.
Overall measurements: 7.125 x 5.625 inches (18 x 14.5 cm). Offered at no reserve.
Provenance: Keith Proctor [Hoppel Catalog # D2209]
[Scale: 1 inch, with mark at 1 cm]
Estimate: $8,000 - $10,000.
Condition report available upon request.
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