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Xanthostemon verdugonianus, commonly known as mangkono or Philippine ironwood, is a species of plant in the family Myrtaceae. [2] It is endemic to the islands of the Visayas, Palawan, and northeastern Mindanao. It is valued for its extremely durable and heavy timber. It is threatened by habitat loss.
Ironwood is a common name for many woods that have a reputation for hardness, or specifically a wood density that is denser than water (approximately 1000 kg/m 3, or 62 pounds per cubic foot), although usage of the name ironwood in English may or may not indicate a tree that yields such heavy wood.
Isle Royale National Park is a national park of the United States consisting of Isle Royale, along with more than 400 small adjacent islands and the surrounding waters of Lake Superior, in Michigan. Isle Royale is 45 mi (72 km) long and 9 mi (14 km) wide, with an area of 206.73 sq mi (535.4 km 2 ), making it the fourth-largest lake island in ...
When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. [3] The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the ...
Olneya ironwood is very hard and heavy. Its density is greater than water and thus sinks; it does not float downstream in washes and must be moved by current motion. Due to its considerable hardness, processing desert ironwood is difficult. Final treatment of the wood with solutions can also be difficult because of its high density.
It is moderately hard and strong. It is used for door and window frames, and carts. Ironwood, Penaga Lilin, Bosneak, Gangaw, Mesua Mesua ferrea: Reddish brown [5] 960–1,060 kg/m 3: 1,620–1,790 lb/cu yd [6] Ironwood is durable though it is very hard and is not easily worked. It even resists penetration of nails.
The fruit is a pair of hard follicles. In natural populations on the islands the tree grows in distinct groves. Isozyme analysis has determined that each grove is a clonal colony in the landscape. [1] Each ironwood clone, or genet, is a group of genetically identical individuals comprising a dozen to several hundred tree trunks, or ramets.
Acacia estrophiolata, commonly known as ironwood, [1] southern ironwood, [2] desert ironwood [3] or utjanypa, [4] is a tree native to Central Australia. Description [ edit ]