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Two Fluorapatite crystals with Quartz on Muscovite matrix. The crystals of Fluorapatite, between short prismatic and thick tabular, show a very well-marked geometrical color zoning, deep violet on the central area and clear blue terminations. Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)  Specimen size: 3 × 2.9 × 2.5 cm = 1.2” × 1.1” × 1.0”

Two Fluorapatite crystals with Quartz on Muscovite matrix. The crystals of Fluorapatite, between short prismatic and thick tabular, show a very well-marked geometrical color zoning, deep violet on the central area and clear blue terminations. Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (1987-2013) Specimen size: 3 × 2.9 × 2.5 cm = 1.2” × 1.1” × 1.0”

Pyrite with Calcite, Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)  Specimen size: 4.5 × 3.5 × 1.5 cm = 1.8” × 1.4” × 0.6”

Pyrite with Calcite, Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (2004) Specimen size: 4.5 × 3.5 × 1.5 cm = 1.8” × 1.4” × 0.6”

Veszelyite Black Pine Mine, Flint Creek Valley, Philipsburg District, Granite Co., Montana Specimen size 1.4 x 1.1 cm

Veszelyite Black Pine Mine, Flint Creek Valley, Philipsburg District, Granite Co., Montana Specimen size 1.4 x 1.1 cm

Wavellite:   Avant Mine, Avant, Garland Co., Arkansas Dimensions	3.4 x 2.0 x 1.1 cm. Thingofinterest:  a phosphate mineral with formula Al3(PO4)2(OH, F) 5H2O. WAVELLITE is perhaps the second best known collectable mineral in Arkansas, quartz being the first.

Wavellite: Avant Mine, Avant, Garland Co., Arkansas Dimensions 3.4 x 2.0 x 1.1 cm. Thingofinterest: a phosphate mineral with formula Al3(PO4)2(OH, F) 5H2O. WAVELLITE is perhaps the second best known collectable mineral in Arkansas, quartz being the first.

Neat Arsenopyrite with a more golden color than the typical ones. The crystal form is also very interesting. It is a floater, very shiny, and has small crystals of white Dolomite on the rear side. Very pleasant. Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)  Specimen size: 11 × 6.5 × 3 cm = 4.3” × 2.6” × 1.2”

Neat Arsenopyrite with a more golden color than the typical ones. The crystal form is also very interesting. It is a floater, very shiny, and has small crystals of white Dolomite on the rear side. Very pleasant. Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (2004) Specimen size: 11 × 6.5 × 3 cm = 4.3” × 2.6” × 1.2”

Heulandite crystals on a bed of mordanite from India the specimen is 1" across / Mineral Friends <3

Heulandite crystals on a bed of mordanite from India the specimen is 1" across / Mineral Friends <3

Stewartite(Mn++Fe+++2(PO4)2(OH)2•8(H2O)), Phosphosiderite(Fe+++PO4•2(H2O))

Stewartite(Mn++Fe+++2(PO4)2(OH)2•8(H2O)), Phosphosiderite(Fe+++PO4•2(H2O))

Fluorapatite on matrix from Germany. From Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Measures 3.2 cm by 2.6 cm by 1.8 cm in total size. Ex. Williams Mineral Collection

Fluorapatite on matrix from Germany. From Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Measures 3.2 cm by 2.6 cm by 1.8 cm in total size. Ex. Williams Mineral Collection

Epitaxial Marcasite on parallel growths of sharp Arsenopyrite crystals showing the so-called “key” shape. They are on matrix, with small white Calcite crystals, small Siderite crystals and leafy Muscovite aggregates. Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Epitaxial Marcasite on parallel growths of sharp Arsenopyrite crystals showing the so-called “key” shape. They are on matrix, with small white Calcite crystals, small Siderite crystals and leafy Muscovite aggregates. Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (1997)

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