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Purpurite is a manganese phosphate mineral with the formula MnPO 4, with varying amounts of iron depending upon its source. It occurs in color ranges from brownish black via purple and violet to dark red. [3] Purpurite forms a series with the iron-bearing endmember heterosite, FePO 4. [4]
Charoite (/ tʃ æ r oʊ. aɪ t / CHAR-ow-ait) is a rare silicate mineral with the chemical composition K(Ca,Na) 2 Si 4 O 10 (OH,F)•H 2 O, first described in 1978.It is named after the Chara River, despite its being 70 kilometres (43 mi) away from the discovery place.
Phosphosiderite is a rare mineral named for its main components, phosphate and iron. The siderite at the end of phosphosiderite comes from the word "sideros", the Greek word for iron. It was published in 1890, and has been a valid species since pre- IMA. It is an IMA approved mineral which got grandfathered, meaning its name is still believed ...
Stichtite. Stichtite is a mineral, a carbonate of chromium and magnesium; formula Mg 6 Cr 2 C O 3 (O H) 16 ·4 H 2 O. Its colour ranges from pink through lilac to a rich purple colour. It is formed as an alteration product of chromite containing serpentine. It occurs in association with barbertonite (the hexagonal polymorph of Mg 6 Cr 2 CO 3 ...
Piemontite. Piemontite is a sorosilicate mineral in the monoclinic crystal system with the chemical formula Ca2(Al,Mn3+,Fe3+)3(SiO4) (Si2O7)O (OH). [ 2] It is a member of the epidote group. [ 4] Red to reddish-brown or red-black in color, piemontite has a red streak and a vitreous lustre. [ 4] Manganese (Mn 3+) causes the red color.
Porphyry (geology) Porphyry ( / ˈpɔːrfəri / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate -rich, generally aphanitic matrix or groundmass. In its non-geologic, traditional use, the term porphyry usually refers to the purple-red form of ...
Sugilite. Sugilite ( / ˈsuːɡəlaɪt, - dʒi -/ SOO-gə-lyte, -jee-) [2] [3] is a relatively rare pink to purple cyclosilicate mineral with the complex chemical formula K Na 2 ( Fe, Mn, Al) 2 Li 3 Si 12 O 30. Sugilite crystallizes in the hexagonal system with prismatic crystals. The crystals are rarely found and the form is usually massive.
The mineral even plays a role in our ability to taste and smell. It's available in animal-derived foods like seafood, meats, and dairy products. It can also be found in some plant-based options ...
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