Formula:SiO₂
Class:Silicates
Crystal system:Trigonal
Hardness:7.00
Specific gravity:2.60-2.70
Dimensions (L x W x H):30 x 20.0 x 20.00 mm
Weight:0 g
Natural specimens may vary slightly from the listed measurements.
This is a natural quartz crystal with siderite association from Panasqueira, Portugal, offered as an authentic mineral specimen for collectors.
The specimen features well-formed prismatic quartz crystals associated with siderite, creating a classic and visually balanced mineral association. Quartz crystals show good transparency and natural terminations, while the siderite adds warm brown tones and geological context to the piece.
This specimen is completely natural and untreated. No restoration, polishing, or artificial enhancement has been applied. All photographs show the exact quartz with siderite specimen you will receive.
Quartz with siderite from Panasqueira is widely collected due to the locality’s historical importance and the consistent quality of mineral associations found there. The specimen is suitable for cabinet collections, reference collections, and advanced mineral displays.
Specifications
The specimen features well-formed prismatic quartz crystals associated with siderite, creating a classic and visually balanced mineral association. Quartz crystals show good transparency and natural terminations, while the siderite adds warm brown tones and geological context to the piece.
This specimen is completely natural and untreated. No restoration, polishing, or artificial enhancement has been applied. All photographs show the exact quartz with siderite specimen you will receive.
Quartz with siderite from Panasqueira is widely collected due to the locality’s historical importance and the consistent quality of mineral associations found there. The specimen is suitable for cabinet collections, reference collections, and advanced mineral displays.
Specifications
- Mineral: Quartz with Siderite
- Chemical formula: SiO₂ + FeCO₃
- Crystal system: Trigonal (quartz)
- Crystal habit: Prismatic quartz with associated siderite
- Color: Colorless to smoky quartz with brown siderite
- Hardness: 7 (quartz), 3.5–4 (siderite)
- Origin: Panasqueira, Portugal
- Condition: natural, untreated mineral specimen