Quartz with Fluorapatite
specimen number:
9507086
location:
Panasqueira Mines, Sao Jorge da Beira, Covilha, Castelo Branco, Portugal
description: The Panasqueira Mines in Beira Baixa, Portugal, opened in 1898 and, aside from a brief temporary closure in 2003, remain actively in operation today. Geologically, the deposit is hosted within a sequence of late Precambrian to Cambrian metasedimentary rocks, primarily consisting of greenschist-facies shales, slates, and greywackes of the Beira schist formation. The mineralization occurs as a sub-horizontal system of quartz veins rich in tungsten, tin, and copper, which are genetically related to an underlying hidden Hercynian granitic pluton emplaced during the Late Carboniferous period.
Unusual specimen from this famous locality. A colorless glassy gemmy terminated crystal of quartz, this naturally healed on the base, hosting green tabular crystals of fluorapatite, these almost entirely as inclusions floating within the crystal of quartz. Complete all around, just slight and tiny minimal micro-damage present. Overall I think this in really good condition.
Size: 7.0 x 5.0 x 5.0 cm (small-cabinet)
Questions about this specimen?
Send an email
or call us: 314-341-1811.
See More
Related by Mineral (Quartz):
Quartz — Minnesota
Origin: Hibbing, St. Louis Co., Minnesota, USA
Number: (1605078)
Size: 4.5 x 4.5 x 3.0 cm (miniature)
Quartz — Switzerland
Origin: St. Gotthard, Ticino, Switzerland
Number: (1052896)
Size: 31.0 x 20.0 x 7.0 cm (large-cabinet)
Quartz — Brazil
Origin: Vaca Morta quarry, Bahia, Brazil
Number: (1713767)
Size: 2.0 x 1.4 x 1.0 cm (thumbnail)
Related by Location (Panasqueira Mines):
Fluorapatite — Portugal
Origin: Panasqueira Mines, Beira Baixa, Portugal
Number: (9505914)
Size: 5.0 x 3.0 x 2.0 cm (miniature)
Fluorapatite — Portugal
Origin: Panasqueira Mines, Covilha, Portugal
Number: (9771182)
Size: 6.0 x 4.0 x 3.3 cm (small-cabinet)
Fluorapatite — Portugal
Origin: Panasqueira Mines, Beira Baixa, Portugal
Number: (9505480)
Size: 4.0 x 4.0 x 2.0 cm (miniature)

