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Hands open, palm holding obsidian volcanic rock at Yellowstone National Park

close-up photo of white fungus growing on weathered stem

American Indian Arrowhead/Spear Point Artifact in Palm of Hand

Turkey tail mushrooms and moss growing on decaying tree bark in the forest.

The ivory color of a mushroom appears to be backlit in this macrophotography of a mushroom top

close up view of a lichen in natural habitat on a moss covered trunk

Microscopic photo of a thin section of calcareous tufa of Holocene age.

Zau Evua, Zaire Province, Angola: Cubitermes sp. epigeal nest / hill / mount in a filed with burnt grass - Cubitermitinae are an Afrotropical subfamily of higher termites. The outer shell of the nest is thick and durable, serving as a protective barrier against predators, environmental elements, and intruders. It also helps to regulate the internal temperature and humidity. Cubitermes termites build nests with one or more caps used to shield the nest against rainfall, giving them a characteristic mushroom shape.

Barnacles along the rugged shoreline along the west coast of Vancouver Island.

Mushrooms captured along a hiking trail in an Ontario Provincial Park.

Agate is a microcrystalline variety of quartz, chiefly chalcedony, cryptocrystalline form of silica. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks. Most agates occur as nodules in volcanic rocks or ancient lavas where they represent cavities originally produced by the disengagement of volatiles in the molten mass which were then filled, wholly by siliceous matter deposited in regular layers upon the walls. Cathedral Valley, Capitol Reef National Park, Utah.

Strange, Fungal growth on a dead, fallen tree.

Daedalea quercina on an old stump in the forest

Asbestos family mineral band in geological rock sample

Various mushroom species. Shot in forest, park, and swamp areas, in both France and West Canada.

Warted Oak Polypore Fungus, Also Know As Weeping Conk, Weeping Polypore, Oak Bracket, Inonotus Dryadeus

Close-up of naturally occurring metallic mineral lead ore

$Lactarius rufus (Scop. ex Fr.) Fr. Rufous Milkcap, Lactaire roux, Fuchsfarbener Milchling, Rõt tejelõgomba, rõt keserûgomba, Lattario fulvo, Rossige melkzwam. Cap 3–10cm across, convex, later flattening, finally with a central depression, the centre usually with a pointed umbo, red-brown, bay or dark brick, moderately thick-fleshed, breaking fairly easily, surface dry and matt, margin somewhat inrolled at first. Stem 40–80 x 5–20mm, concolorous with cap but paler. Flesh white, stem often hollow when old. Gills somewhat decurrent, brittle, yellowish at first, later as cap but paler. Milk white; taste mild then after about a minute very hot and acrid. Spore print creamy whitish (B) with slight salmon tinge. Spores elliptic, warts occasionally isolated but mainly connected by thin ridges to form a rather incomplete network, 8–9.5 x 6.5–7.5µ. Habitat under pine. Season late spring to late autumn. Very common. Not edible although in some areas used as a seasoning after special treatment. (Never eat any mushroom until you are certain it is edible as many are poisonous and some are deadly poisonous.) Distribution, America and Europe (source R. Phillips).\n\nThis is a common Species under Pines in the Netherlands.$

Digital photo of fruiting body of wood-decaying fungus, Daldinia loculata growing on birch wood. This fungi belongs to the Xylariaceae family and benefits from forest fires. Many insects lives on this fungi.

A thick growth of greenshield lichen on a rock. The leaf-like lobes proclaim this a foliose lichen. Lichens are interesting, often beautiful, life forms. They cover 7% of the earth's surface. Though they undergo photosynthesis, they are not plants. They are composite organisms in which algae and fungi live symbiotically. The three main types are foliose, fruticose and crustose. Lichens are indicators of environmental quality, and they do no harm to the natural substrates on which they grow.

Pyrolusite ore is a mineral basically composed of manganese dioxide.

Wild mushrooms growing on a fallen tree trunk in the indigenous forests of the Garden Route region of South Africa.

Blooming Rafflesia plant close-up in Malaysia

The shiitake (shitake) Mushroom (Lentinula edodes)

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