The crystal chemistry and paragenesis of honessite and hydrohonessite: the sulphate analogues of reevesite

Bish, David L.; Livingstone, A.

doi:10.1180/minmag.1981.044.335.15

Cited by 107 publications

(71 citation statements)

References 8 publications

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“…Honessite found near a chrome deposit (Unst, Shetland) and described by Bish and Livingstone (1981) was mixed with hydrohonessite and reevesite. The three varieties have the same composition brucite-like layers, [Niz.sFe~ 23+](OH)8, but differ in the composition of interlayers, thereby suggesting to the authors a genetic affinity.…”

Section: So42--bearing Polytypes Withmentioning

confidence: 99%

Polytype Diversity of the Hydrotalcite-Like Minerals II. Determination of the Polytypes of Experimentally Studied Varieties

Bookin

Cherkashin

Drits

1993

Clays and clay miner.

130

106

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Almtraet.--Polytype diversity of hydrotalcite-like minerals is mainly a function of the nature of the interlayer anion. Among the varieties with COl-anions, only two-and three-layer polylypes having the same structure as manasseite and hydrotalcite have been confirmed. Stichtite and reevesite, which have been previously identified as six-layer polytypes, are in fact three-layer polytypes.Among SO4 ~ varieties, one-layer and three-layer polytypes have been identified, but the one-layer types are only present in more hydrated minerals with larger interlayer spacings. The three-layer varieties are of three different polytypes, with both P-and O-types ofinterlayers. Both rhombohedral and hexagonal varieties exist. Interlayer type may change during hydration-dehydration or anion exchange. Thus, in contrast with the COs2--bearing minerals, a complete description of the polytype of the SO42--bearing minerals cannot be made by simply indicating the number of the brucite-like layers in the unit cell.The two-layer unit cell seen in refined crystal structures of some minerals with SO42-interlayers is not due to a doubled periodicity of alternation of brucite-like layers but to periodicity of interlayer anions, or layer cations.

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Section: So42--bearing Polytypes Withmentioning

confidence: 99%

Polytype Diversity of the Hydrotalcite-Like Minerals II. Determination of the Polytypes of Experimentally Studied Varieties

Bookin

Cherkashin

Drits

1993

Clays and clay miner.

130

106

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“…In foundation work used to derive the ideal hydrohonessite formula, Bish & Livingstone (1981) analyzed naturally occurring hydrohonessite samples and found the divalent/trivalent cation ratio to be ~ 2.5. The authors concluded that, analogously to reevesite (Ni 6 Fe 2 (OH) 16 CO 3 4H 2 O), the Ni(II)/Fe(III) LDH containing carbonate as the interlayer anion, the ideal divalent/trivalent cation ratio for hydrohonessite is most likely also 3, resulting in a formula of Ni 6 Fe 2 (OH) 16 SO 4 nH 2 O.…”

Section: Resultsmentioning

confidence: 99%

Nickel incorporation in Fe(II, III) hydroxysulfate Green Rust: effect on crystal lattice spacing and oxidation products

Chaves

Curry

Stone

et al. 2009

Rev. Bras. Ciênc. Solo

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SUMMARY Ni(II)-Fe(II)-Fe(III) layered double hydroxides (LDH) orNi-containing sulfate green rust (GR2) samples were prepared from Ni(II), Fe(II) and Fe(III) sulfate salts and analyzed with X ray diffraction. Nickel is readily incorporated in the GR2 structure and forms a solid solution between GR2 and a Ni(II)-Fe(III) LDH. There is a correlation between the unit cell a-value and the fraction of Ni(II) incorporated into the Ni(II)-GR2 structure. Since there is strong evidence that the divalent/trivalent cation ratio in GR2 is fixed at 2, it is possible in principle to determine the extent of divalent cation substitution for Fe(II) in GR2 from the unit cell a-value. Oxidation forms a mixture of minerals but the LDH structure is retained if at least 20 % of the divalent cations in the initial solution are Ni(II). It appears that Ni(II) is incorporated in a stable LDH structure. This may be important for two reasons, first for understanding the formation of LDHs, which are anion exchangers, in the natural environment. Secondly, this is important for understanding the fate of transition metals in the environment, particularly in the presence of reduced Fe compounds.

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“…The oc cur rence of these bands could be ex plained by the pres ence of small in clu sions of mal a chite, known to be closely as so ci ated with woodwardite. On the other hand, small amounts of car bon ate ions have been de tected in hydro talcitelike sul phate min er als from dif fer ent sites (e.g., Nickel, 1976;Bish and Living stone, 1981;Raade et al, 1985). This is sug gestive of par tial car bon ate-for-sul phate re place ment in the structure of the woodwardite from Radzimowice.…”

Section: Ta Blementioning

confidence: 99%

Recently forming secondary copper minerals as indicators of geochemical conditions in an abandoned mine in Radzimowice (SW Poland)

Siuda

Kruszewski

2013

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1 In sti tute of Geo chem is try, Min er al ogy and Pe trol ogy, Uni ver sity of War saw, ¯wirki i Wigury 93, 02-089 Warszawa, Po land 2 In sti tute of Geo log i cal Sci ences, Pol ish Acad emy of Sci ences, Twarda 51/55, 00-818 Warszawa, Po land Siuda R. and Kruszewski £. (2013) Re cently formed sec ond ary cop per min er als as in di ca tors of geo chem i cal con di tions in an aban doned mine in Radzimowice (SW Po land). Geo log i cal Quar terly, 57 (4): 583-600, doi: 10.7306/gq.1114An oc cur rence of twelve re cently formed sec ond ary cop per min er als (SCM) was ob served in un der ground work ings of an aban doned Cu-As-Au mine in Radzimowice. The min er als, mainly sul phate spe cies, were iden ti fied us ing Pow der X-Ray Diffrac tion (PXRD), scan ning elec tron mi cro scope with en ergy dispersive spec tros copy sys tem (SEM-EDS) and elec tron microprobe anal y sis with wave length-dispersive spec trom e try sys tem (EPMA-WDS) meth ods. The SCM of Radzimowice form the fol low ing as sem blages: paragenesis I is char ac ter ized by langite, posnjakite, brochantite and devilline. These miner als crys tal lise di rectly from pH 6.0-7.0 mine wa ters. Paragenesis II also com prises hy drous cop per sulphates (HCS), and in ad di tion con tains na tive cop per, cu prite, ferrihydrite and gyp sum. Sec ond ary HCS mainly crys tal lise as prod ucts of re actions of sul phate-rich mine wa ters with na tive cop per and cu prite. The pH of these wa ters var ies from ~5.0 to 6.0. The III paragenesis is dom i nated by woodwardite, as so ci ated with vari able amounts of chalcoalumite and amor phous Cu-Al sulphates. Ac cu mu la tions of woodwardite oc cur in the zones where Al-and sul phate-rich acid mine wa ters (pH ~2.5-3.0) mix with neu tral wa ters (pH 6.5-7.0). Paragenesis IV is rare, dom i nated by chrysocolla, co ex ist ing with small amounts of mottramite and goethite. This as sem blage formed as a re sult of mo bi li za tion of sil ica re leased dur ing de com po si tion of rock-form ing aluminosilicates at tacked by acid mine wa ters.

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The crystal chemistry and paragenesis of honessite and hydrohonessite: the sulphate analogues of reevesite

Cited by 107 publications

References 8 publications

Polytype Diversity of the Hydrotalcite-Like Minerals II. Determination of the Polytypes of Experimentally Studied Varieties

Polytype Diversity of the Hydrotalcite-Like Minerals II. Determination of the Polytypes of Experimentally Studied Varieties

Nickel incorporation in Fe(II, III) hydroxysulfate Green Rust: effect on crystal lattice spacing and oxidation products

Recently forming secondary copper minerals as indicators of geochemical conditions in an abandoned mine in Radzimowice (SW Poland)

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