Hematite: A primary ore of iron and a pigment mineral - Geology.com
Hematite is the most important ore of iron, and it has been used by people as a pigment for at least 40,000 years. Learn about the uses and properties of the mineral hematite.
How To Identify Hematite Like a Graduate Gemologist
2023年1月16日 · When dealing with Hematite, you’ll notice a red or reddish-brown streak. Raw hematite can be streaked across a piece of white paper to expose its color, hematites are always red. Tumbled specimens are tested by scraping a specimen across a piece of ungalvanized porcelain, typically known as a streak plate.
Hematite ores are confined primarily to the iron ranges of the Northern Peninsula, which have produced world-class specimens. Minor amounts of hematite also are widespread in rocks, lodes, and veins of the native copper district (Butler and Burbank, 1929; Cornwall, 1951a).
Hematite Mineral Data
Comments: Specular hematite rich with crystalline grains of reddish brown defernite. Location: Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia. Scale: 3.9 x 2.5 cm.
How To Spot Hematite (Real or Fake) Identification Guide
2024年1月25日 · To identify hematite, look for its metallic sheen and brass-yellow color, often with a greenish or blackish streak. Pyrite forms in cubic or framboidal shapes, distinguishing it from gold. It’s harder than gold, ranking about 6-6.5 on the Mohs scale.
Hematite, a Shape-shifting Mineral From the Stone Age
2023年11月21日 · Hematite is an iron oxide in its base form that is 70 percent iron and 30 percent oxygen, and has the chemical formula of Fe 2 O 3. As one of the most abundant minerals on the planet, it is perfect for mining to produce iron and iron-based derivatives like steel.
HEMATITE (Iron Oxide) - Amethyst Galleries Mineral Gallery
Specularite is a micaceous or flaky stone that is sparkling silver gray and sometimes used as an ornamental stone. Hematite is an important ore of iron and its blood red color (in the powdered form) lends itself well to use as a pigment. Hematite gets its name from a Greek word meaning blood-like because of the color of its powder.
Hematite | Rock & Gem Magazine
2019年5月30日 · More obvious are the specimens of hematite with a curving ball-like surface, decidedly reddish surface color, and shaped like a human kidney. English miners even took to calling it kidney ore. Ancient cave artists would crush hematite into a red powder and use a straw-like tube to blow it into the porous rock to create artistic images.
Hematite mineral information and data - Dakota Matrix
Hematite occurs as an accessory mineral in igneous rocks, as a sublimate in volcanic rocks, in high-temperature hydrothermal veins, a contact metamorphism product, in metamorphosed banded iron formations, as a cement in sedimentary and a constituent in oolitic iron formations, and it is abundant on weathered iron-bearing minerals.
HEMATITE : Mineral Factsheet and Information Page
2024年7月25日 · hematite specimens occur more rarely in rhombohedral form, also as botryoidal hematite specimens as well as in reniform, massive, earthy and soft (red ocher). Hematite also occurs as inclusions (typically flake-like) in quartz, feldspar and a variety of other minerals.