Kinoite
A valid IMA mineral species
This page kindly sponsored by Josiah Heyman
About Kinoite
Formula:
Ca2Cu2(H2O)2[Si3O10]
Colour:
Deep blue
Lustre:
Vitreous
Hardness:
2½
Specific Gravity:
3.13 - 3.19
Crystal System:
Monoclinic
Name:
Named for the Italian Jesuit missionary Eusebio Francisco Kino (born August 10, 1645 in the village of Segno, Predaia, Val di Non, Trento, County of Tyrol, Holy Roman Empire (later Austrian Empire and Austro-Hungarian Empire, presently Italy - died March 15, 1711)).
In 1687 he established his first mission among the Indians of Sonora at Nuestra Senora de los Dolores. as well as new missions, including San Xavier del Bac (1700) near Tucson, Guevavi, and Tumacacori. In 1691, Father Kino made the first of about 40 expeditions into Arizona. He helped the Pima Indians in diversifying their agriculture and aided them in their continuous wars with the Apaches, while opposing Indian enslavement in the silver mines of northern Mexico.
Pronounced kē'-nō-ite.
In 1687 he established his first mission among the Indians of Sonora at Nuestra Senora de los Dolores. as well as new missions, including San Xavier del Bac (1700) near Tucson, Guevavi, and Tumacacori. In 1691, Father Kino made the first of about 40 expeditions into Arizona. He helped the Pima Indians in diversifying their agriculture and aided them in their continuous wars with the Apaches, while opposing Indian enslavement in the silver mines of northern Mexico.
Pronounced kē'-nō-ite.
According to the published type description (Anthony et al., 1970), the type locality is Unnamed drill core (kinoite type locality), Helvetia-Rosemont Mining District, Pima County, Arizona, USA.
Unique Identifiers
Mindat ID:
2213
Long-form identifier:
mindat:1:1:2213:8
IMA Classification of Kinoite
Approved
IMA Formula:
Ca2Cu2Si3O10 · 2H2O
Approval year:
1969
First published:
1970
Classification of Kinoite
9.BH.10
9 : SILICATES (Germanates)
B : Sorosilicates
H : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in tetrahedral [4] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
H : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in tetrahedral [4] and greater coordination
57.1.2.1
57 : SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
1 : Insular Si3O10 and Larger Noncyclic Groups with [Si3O10] groups
57 : SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
1 : Insular Si3O10 and Larger Noncyclic Groups with [Si3O10] groups
14.2.9
14 : Silicates not Containing Aluminum
2 : Silicates of Cu
14 : Silicates not Containing Aluminum
2 : Silicates of Cu
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Kin | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Kinoite
Vitreous
Transparency:
Transparent
Colour:
Deep blue
Hardness:
2½ on Mohs scale
Cleavage:
Very Good
excellent {010}, distinct {001} and {100}
excellent {010}, distinct {001} and {100}
Density:
3.13 - 3.19 g/cm3 (Measured) 3.193 g/cm3 (Calculated)
Optical Data of Kinoite
Type:
Biaxial (-)
RI values:
nα = 1.638 nβ = 1.665 nγ = 1.676
2V:
Measured: 68° , Calculated: 64°
Max. Birefringence:
δ = 0.038
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
Relatively weak. Type description gives r < v, distinct.
Optical Extinction:
X = b, Z ∧ c ≃ 0°.
Pleochroism:
Strong
Comments:
X= pale greenish blue
Y= blue
Z= deep blue
Y= blue
Z= deep blue
Comments:
Absorption: Z > Y > X.
Chemistry of Kinoite
Mindat Formula:
Ca2Cu2(H2O)2[Si3O10]
Element Weights:
Common Impurities:
Mg
Crystallography of Kinoite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 6.99 Å, b = 12.88 Å, c = 5.65 Å
β = 96.18°
β = 96.18°
Ratio:
a:b:c = 0.543 : 1 : 0.439
Unit Cell V:
505.72 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Tabular in the plane of b and c axes. [hk0] zone is striated. Pseudoorthorhombic.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0000222 | Kinoite | Laughon R B (1971) The crystal structure of kinoite American Mineralogist 56 193-200 | ![]() | 1971 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Loading XRD data...
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.72 Å | (100) |
3.052 Å | (81) |
6.44 Å | (74) |
2.116 Å | (41) |
3.138 Å | (30) |
2.315 Å | (30) |
3.951 Å | (26) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
31 : Thermally altered carbonate, phosphate, and iron formations |
Type Occurrence of Kinoite
General Appearance of Type Material:
Veinlets and crystals embedded in apophyllite. Euhedral crystals to 1mm. From drill core.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA, 109439.
National Museum of Natural History, Washington, D.C., USA, 122395.
Department of Geology, University of Arizona, Arizona, USA.
National Museum of Natural History, Washington, D.C., USA, 122395.
Department of Geology, University of Arizona, Arizona, USA.
Geological Setting of Type Material:
Skarn and fault gouge.
Associated Minerals at Type Locality:
Synonyms of Kinoite
Other Language Names for Kinoite
Common Associates
Associated Minerals Based on Photo Data:
98 photos of Kinoite associated with Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) · 8H2O |
96 photos of Kinoite associated with Apophyllite Group | AB4[Si8O22]X · 8H2O |
81 photos of Kinoite associated with Hydroxyapophyllite-(K) | KCa4(Si8O20)(OH,F) · 8H2O |
57 photos of Kinoite associated with Gilalite | Cu5Si6O17 · 7H2O |
23 photos of Kinoite associated with Ruizite | Ca2Mn3+2[Si4O11(OH)2](OH)2 · 2H2O |
17 photos of Kinoite associated with Calcite | CaCO3 |
16 photos of Kinoite associated with Quartz | SiO2 |
13 photos of Kinoite associated with Native Silver | Ag |
10 photos of Kinoite associated with Xonotlite | Ca6(Si6O17)(OH)2 |
8 photos of Kinoite associated with Stringhamite | CaCu(SiO4) · H2O |
Related Minerals - Strunz-mindat Grouping
9.BH. | Bunnoite | Mn2+6AlSi6O18(OH)3 |
9.BH.05 | Aminoffite | Ca2(Be,Al)(Si2O7)(H2O,OH) |
9.BH.15 | Akatoreite | Mn2+9Al2Si8O24(OH)8 |
9.BH.20 | Fencooperite | Ba6Fe3+3Si8O23(CO3)2Cl3 · H2O |
Other Information
Notes:
Decomposed in dilute HCl, without effervescence, with the development of a white residue.
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 Kinoite
mindat.org URL:
https://www.mindat.org/min-2213.html
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Please feel free to link to this page.
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References for Kinoite
Reference List:
Anthony, John W., Laughon, Robert B. (1970) Kinoite, a new hydrous copper calcium silicate mineral from Arizona. American Mineralogist, 55 (5-6) 709-715
Kusachi, Isao, Nishimura, Makoto, Shiraga, Kanako, Kobayashi, Shoichi, Yamakawa, Junji (2001) Kinoite from Fuka, Okayama Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 96 (1) 29-33 doi:10.2465/jmps.96.29
Localities for Kinoite
Locality List




All localities listed without proper references should be considered as questionable.
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Christmas Mine, Christmas, Banner Mining District, Gila County, Arizona, USA