Cryptomelane (K(Mn4+,Mn2+)8O16) is the potassium endmember of the hollandite group, a family of tectomanganates with a 2 × 2 tunnel structure. In 1942...
4 KB (256 words) - 21:14, 21 May 2024
Their nature determines the mineral species: Ba for hollandite, K for cryptomelane, Pb for coronadite, Sr for strontiomelane, Tl for thalliomelane, and...
4 KB (248 words) - 19:50, 10 April 2025
chemically related to ferricoronadite, an Fe+3 analogue, as well as cryptomelane, hollandite, manjiroite and strontiomelane. Polyhedral representation...
3 KB (110 words) - 19:57, 10 April 2025
with akhtenskite are: todorokite, pyrolusite, nsutite, goethite, and cryptomelane. Look up akhtenskite in Wiktionary, the free dictionary. Warr, L.N. (2021)...
3 KB (228 words) - 13:07, 12 December 2024
2019 researchers from Queensland University of Technology developed cryptomelane based electrodes as cathode for aluminium ion battery with an aqueous...
34 KB (3,635 words) - 03:47, 2 June 2025
including: birnessite (Na 4Mn 14O 27•9H 2O) coronadite (PbMn 8O 16) cryptomelane (KMn 8O 16) hollandite (BaMn 8O 16) romanechite ((Ba,H 2O)Mn 5O 10) todorokite...
14 KB (1,583 words) - 00:25, 25 May 2025
occurs associated with manganite, hollandite, hausmannite, braunite, cryptomelane, chalcophanite, goethite, and hematite under oxidizing conditions in...
8 KB (803 words) - 20:03, 25 May 2025
the Australian National University. The Synroc contains pyrochlore and cryptomelane type minerals. The original form of Synroc (Synroc C) was designed for...
113 KB (12,912 words) - 09:17, 29 May 2025
Crocoite Cronstedtite Crookesite Crossite (not approved by IMA) Cryolite Cryptomelane Cubanite Cumengeite Cummingtonite Cupalite Cuprite Cuprosklodowskite...
43 KB (2,828 words) - 14:08, 17 April 2025
Cphl Calciocopiapite Ccpi Cattiite Ctt Chiolite Cio Clino-suenoite Csue Cryptomelane Cml Calciodelrioite Cdlr Cavansite Cav Chirvinskyite Cvs Clinotobermorite...
180 KB (418 words) - 12:01, 15 December 2024
Mannardite, 05 Redledgeite, 05 Priderite, 05 Henrymeyerite, 05 Akaganeite, 10 Cryptomelane, 10 Romanechite, 10 Strontiomelane, 10 Todorokite 04.DL With large (±...
18 KB (1,959 words) - 21:18, 28 May 2025
axes, and elongated parallel to the c axis. Minerals of the hollandite-cryptomelane and romanèchite groups also have fibrous or acicular habits and two perfect...
17 KB (1,992 words) - 19:07, 8 April 2025
manganite, polianite, nsutite and psilomelane. Ramsdellite, hausmannite and cryptomelane are also found. Above the main ore zone is a 5 to 6 metres (16 to 20 ft)...
23 KB (2,699 words) - 18:52, 1 April 2025
doi:10.1130/GSAB-52-1577. —— (1943). "The chemical relationship of cryptomelane (psilomelane), hollandite, and coronadite". American Mineralogist. 28...
13 KB (1,370 words) - 17:51, 26 May 2025
CH.15 [1,069] [1,070] [1,071] (IUPAC: diammonium hexafluorosilicate) Cryptomelane (hollandite, coronadite: IMA1982 s.p.?, 1942) 4.DK.05a [1,072] [1,073]...
103 KB (6,708 words) - 17:15, 19 June 2024
association with bitumen, bobierrite, carbonate rich fluoroapatite, cryptomelane, dolomite, Fe–Mn oxides, kovdorskite, parahopeite, and scholzite. Warr...
13 KB (1,179 words) - 08:26, 1 December 2024
million tonnes at %52 to %53 Manganese to ore, making it one of the cryptomelane-richest ore resources in the world. The site's inaccessibility and lack...
6 KB (665 words) - 18:38, 29 March 2025
is composed of nsutite with small amounts of psilomelane, pyrolusite, cryptomelane and hausmanite. In terms of processing agricultural and livestock products...
66 KB (6,272 words) - 08:32, 29 May 2025
1/3, IMA2009-027 (Fe,Mg)Al12O19 Cryptomelane group (Hard black, fine-grained) Hollandite Ba(Mn4+,Mn2+)8O16, Cryptomelane K(Mn4+,Mn2+)8O16, Manjiroite (Na...
104 KB (8,561 words) - 02:50, 12 January 2025