UM1987-05-OH:AlCMg
A material that is NOT an approved mineral species
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Formula:
Mg4Al2(OH)12(CO3,SO4) · 3H2O
more specifically [Mg4Al2(OH)12][(SO4)0.5(CO3)0.5•3H2O]
Specific Gravity:
2.06 (Calculated)
Member of:
Compare the stoichiometrically identical (or similar) quintinite and 'quintinite-3T'. Also compare UM1996-25-OH:AlCMg.
The phase represents and ordered ABAB-type alternation (16.5-Ã…-ordered phase) of 7.56 Ã… and 8.94 Ã… layers; the sulfate anion is located in the interelayers. The first layer is brucite-like, while the second contains the carbonate groups.
Exact localities not stated. The phase (together with other potentially new minerals of the supergroup) was found within salt deposits of (1) the Middle Asia, and within (2) Lower Permian rocks of the pre-Caspian depression. Other associated minerals include quartz, chalcedony, chlorite group, biotite, "oxylepidomelane", zircon, garnet group, titanite, anhydrite, kieserite, langbeinite, and various borates at "1"; quartz, chalcedony, anhydrite, magnesite, Mg-rich chlorite group, and illite at "2".
The phase represents and ordered ABAB-type alternation (16.5-Ã…-ordered phase) of 7.56 Ã… and 8.94 Ã… layers; the sulfate anion is located in the interelayers. The first layer is brucite-like, while the second contains the carbonate groups.
Exact localities not stated. The phase (together with other potentially new minerals of the supergroup) was found within salt deposits of (1) the Middle Asia, and within (2) Lower Permian rocks of the pre-Caspian depression. Other associated minerals include quartz, chalcedony, chlorite group, biotite, "oxylepidomelane", zircon, garnet group, titanite, anhydrite, kieserite, langbeinite, and various borates at "1"; quartz, chalcedony, anhydrite, magnesite, Mg-rich chlorite group, and illite at "2".
Unique Identifiers
Mindat ID:
51523
Long-form identifier:
mindat:1:1:51523:4
GUID
(UUID V4):
(UUID V4):
1fd7d5b6-365c-4fbd-af6a-eb1dc96e9ebf
Classification of UM1987-05-OH:AlCMg
5.DA.40
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Physical Properties of UM1987-05-OH:AlCMg
Density:
2.06 g/cm3 (Calculated)
Chemistry of UM1987-05-OH:AlCMg
Mindat Formula:
Mg4Al2(OH)12(CO3,SO4) · 3H2O
more specifically [Mg4Al2(OH)12][(SO4)0.5(CO3)0.5•3H2O]
more specifically [Mg4Al2(OH)12][(SO4)0.5(CO3)0.5•3H2O]
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.25 Ã… | (100) |
| 4.125 Ã… | (88) |
| 5.50 Ã… | (17) |
| 3.30 Ã… | (8) |
| 16.5 Ã… | (1.5) |
| 2.73 Ã… | (1) |
| 2.357 Ã… | (1) |
Relationship of UM1987-05-OH:AlCMg to other Species
Member of:
Other Members of this group:
| Akopovaite | Al4Li2(OH)12(CO3)(H2O)3 | Mon. 2/m : B2/m |
| Amoraite | Ca12Al6(OH)36(CO3)2(SO3) · 15H2O | Tric. 1 : P1 |
| Brugnatellite | Mg6Fe3+(CO3)(OH)13 · 4H2O | Hex. |
| Carbocalumite | Ca4Al2(OH)12(CO3) · 6H2O | Trig. 3m (3 2/m) : R3c |
| Coalingite | Mg10Fe3+2(OH)24[CO3] · 2H2O | Trig. 3m (3 2/m) : R3m |
| Cualstibite Group | M2R(OH)6[Sb5+(OH)6], where M = Zn, Ni, Cu and R = Al or Fe3+ | |
| Dritsite | Li2Al4(OH)12Cl2 · 3H2O | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| Fougèrite Group | ||
| Glaucocerinite Group | ||
| Hydrocalumite Group | ||
| Hydrotalcite Group | M6R3+2(OH)16Z · 4H2O, where M=Mg, Fe, Ni, R3+ = Al, Cr, Co or Fe, and Z=CO3, Cl | |
| Karchevskyite | Mg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5 | Trig. |
| Mampsisite | Ca4Al2(CO3)(OH)12 · 5H2O | Tric. |
| Muskoxite | Mg7Fe4O13 · 10H2O | Trig. 3m (3 2/m) |
| Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O | Trig. 3 : R3 |
| Quintinite Group | ||
| Wermlandite Group | M7R3+2(OH)18[Ca(H2O)6][SO4]2 · 6H2O, where = Mg, Fe, Zn and R= Al or Fe | |
| Woodwardite Group | May be considered a subgroup of the Hydrotalcite Group. |
Related Minerals - Strunz-mindat Grouping
| 5.DA. | Alexkhomyakovite | K6(Ca2Na)(CO3)5Cl · 6H2O |
| 5.DA. | Amoraite | Ca12Al6(OH)36(CO3)2(SO3) · 15H2O |
| 5.DA.05 | Dypingite | Mg5(CO3)4(OH)2 · 5H2O |
| 5.DA.05 | Giorgiosite | Mg5(CO3)4(OH)2 · 5-6H2O |
| 5.DA.05 | Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| 5.DA.05 | Widgiemoolthalite | Ni5(CO3)4(OH)2 · 5H2O |
| 5.DA.05 | UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995) | Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O |
| 5.DA.05 | UM1987-01-CO:HMgS | Mg4(CO3)2(OH)4 · 6H2O ? |
| 5.DA.10 | Artinite | Mg2(CO3)(OH)2 · 3H2O |
| 5.DA.10 | Indigirite | Mg2Al2(CO3)4(OH)2 · 15H2O |
| 5.DA.10 | Chlorartinite | Mg2(CO3)(OH)Cl · 2H2O |
| 5.DA.15 | Otwayite | Ni2(CO3)(OH)2 · H2O |
| 5.DA.15 | Zaratite | Ni3(CO3)(OH)4 · 4H2O ? |
| 5.DA.20 | Kambaldaite | NaNi4(CO3)3(OH)3 · 3H2O |
| 5.DA.25 | Callaghanite | Cu2Mg2(CO3)(OH)6 · 2H2O |
| 5.DA.30 | Claraite | (Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2O |
| 5.DA.35 | Hydroscarbroite | Al14(CO3)3(OH)36 · nH2O |
| 5.DA.35 | Scarbroite | Al5(CO3)(OH)13 · 5H2O |
| 5.DA.40 | Caresite | Fe2+4Al2(OH)12[CO3] · 3H2O |
| 5.DA.40 | Quintinite | Mg4Al2(OH)12(CO3) · 3H2O |
| 5.DA.40 | Charmarite | Mn2+4Al2(OH)12[CO3] · 3H2O |
| 5.DA.40 | Karchevskyite | Mg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5 |
| 5.DA.45 | Stichtite-2H | Mg6(Cr,Al)2(CO3)(OH)16 · 4H2O |
| 5.DA.45 | Brugnatellite | Mg6Fe3+(CO3)(OH)13 · 4H2O |
| 5.DA.45 | Chlormagaluminite | Mg4Al2(OH)12Cl2 · 3H2O |
| 5.DA.45 | Hydrotalcite-2H | Mg6Al2(CO3)(OH)16 · 4H2O |
| 5.DA.45 | Pyroaurite-2H | Mg6Fe3+2(OH)16(CO3) · 4H2O |
| 5.DA.45 | Zaccagnaite | Zn4Al2(OH)12[CO3] · 3H2O |
| 5.DA.45 | Liudongshengite | Zn4Cr2(OH)12(CO3) · 3H2O |
| 5.DA.50 | Comblainite | Ni4Co2(OH)12[CO3] · 3H2O |
| 5.DA.50 | Desautelsite | Mg6Mn3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Hydrotalcite | Mg6Al2(CO3)(OH)16 · 4H2O |
| 5.DA.50 | Pyroaurite | Mg6Fe3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Reevesite | Ni6Fe3+2(OH)16(CO3) · 4H2O |
| 5.DA.50 | Stichtite | Mg6Cr3+2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Takovite | Ni6Al2(OH)16[CO3] · 4H2O |
| 5.DA.50 | Kaznakhtite | Ni6Co3+2(CO3)(OH)16 · 4H2O |
| 5.DA.55 | Coalingite | Mg10Fe3+2(OH)24[CO3] · 2H2O |
| 5.DA.55 | Akopovaite | Al4Li2(OH)12(CO3)(H2O)3 |
| 5.DA.60 | Šlikite | Zn2Mg(CO3)2(OH)2 · 4H2O |
| 5.DA.65 | Marklite | Cu5(CO3)2(OH)6 · 6H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for UM1987-05-OH:AlCMg
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https://www.mindat.org/min-51523.html
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References for UM1987-05-OH:AlCMg
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