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Lepidolite is associated with other lithium-bearing minerals like spodumene in pegmatite bodies. It is the major source of the alkali metal rubidium . [ 13 ] In 1861, Robert Bunsen and Gustav Kirchhoff extracted 150 kg (330 lb) of lepidolite to yield a few grams of rubidium salts for analysis, and therefore discovered the new element rubidium.
Porringer – a shallow bowl, 4–6 inches (10–15 cm) in diameter, and 1.5–3 inches (3.8–7.6 cm) deep; the form originates in the medieval period in Europe and they were made in wood, ceramic, pewter and silver. A second, modern usage, for the term porringer is a double saucepan similar to a bain-marie used for cooking porridge.
Ancient furniture was made from many different materials, including reeds, wood, stone, metals, straws, and ivory. It could also be decorated in many different ways. Sometimes furniture would be covered with upholstery, upholstery being padding, springs, webbing, and leather. Features which would mark the top of furniture, called finials, were ...
A silver porringer created by John Coney, c. 1710, Birmingham Museum of Art. A porringer is a shallow bowl, between 4 and 6 inches (100–150 mm) in diameter, and 1 + 1 ⁄ 2 to 3 inches (38–76 mm) deep; the form originated in the medieval period in Europe and was made in wood, ceramic, pewter, cast iron and silver.
A Mason's ironstone plate, 1840 - 1860 Maker's mark from the base of a 1920s Mason's 'Watteau' ironstone bowl (full piece pictured below). Note the "orange peel" texture, a defect, in the surface. Ironstone china, ironstone ware or most commonly just ironstone, is a type of vitreous pottery first made in the United Kingdom in
Once logs arrive at the Great Alaskan Bowl Co., they go through a 22-step process of carving, sanding and oiling to become wooden bowls, says cutter and sander Klaus Reeck.
Jun wheel-thrown stoneware bowl with blue glaze and purple splashes, Jin dynasty, 1127–1234 Official Jun "streaked" hexagonal flowerpot and stand, Ming dynasty, 1400–35 Wine cup, opaque bluish glaze with purple-red splashes, late Jin or early Yuan dynasty, 12th–13th century
Green plastic garden furniture, Czech Republic, 2009. The most commonly sold types of patio sets are made of plastic, wood, aluminium, wicker, and wrought iron. Wooden garden furniture can suffer through exposure to the elements and therefore needs to be periodically treated. [7] Teak is a commonly used