Hokkaidoite
A valid IMA mineral species
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About Hokkaidoite
Formula:
C22H12
Crystal System:
Monoclinic
Known synthetic analogue.
Organic mineral, most likely a Polycyclic Aromatic Hydrocarbon (PAH; possibly anthanthrene or benzo[ghi]perylene, but there are at least 20 more possibilities - to be added).
Note: type locality is reported as "Shikaribetsu area" (set to: Shikaribetsu lake fluorescent opal occurrence). Aibetsu mercury mine is the cotype locality.
Organic mineral, most likely a Polycyclic Aromatic Hydrocarbon (PAH; possibly anthanthrene or benzo[ghi]perylene, but there are at least 20 more possibilities - to be added).
Note: type locality is reported as "Shikaribetsu area" (set to: Shikaribetsu lake fluorescent opal occurrence). Aibetsu mercury mine is the cotype locality.
Unique Identifiers
Mindat ID:
470614
Long-form identifier:
mindat:1:1:470614:0
GUID
(UUID V4):
(UUID V4):
85a2ecad-b03a-47a1-b5d3-3b1a184522c0
IMA Classification of Hokkaidoite
Approved, Pending publication
Approval history:
IMA no. 2022-104
Classification of Hokkaidoite
10.B0.
10 : ORGANIC COMPOUNDS
B : Hydrocarbons
0 :
10 : ORGANIC COMPOUNDS
B : Hydrocarbons
0 :
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 |
---|---|---|
Hkd | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Hokkaidoite
Mindat Formula:
C22H12
Elements listed:
Crystallography of Hokkaidoite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 9.8422(9) Å, b = 11.866(5) Å, c = 11.722(2) Å
β = 98.76(1)°
β = 98.76(1)°
Ratio:
a:b:c = 0.829 : 1 : 0.988
Unit Cell V:
1,353.01 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
9.855 Å | (100) |
8.348 Å | (34) |
6.710 Å | (11) |
5.346 Å | (15) |
4.156 Å | (24) |
3.978 Å | (13) |
3.608 Å | (11) |
3.191 Å | (11) |
Type Occurrence of Hokkaidoite
Co-Type Localities:
Place of Conservation of Type Material:
collections of the National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba 305-0005, Japan, registration number NMS-M49763 (holotype) and NMS-M49765 (cotype)
Common Associates
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 Hokkaidoite
mindat.org URL:
https://www.mindat.org/min-470614.html
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References for Hokkaidoite
Localities for Hokkaidoite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Japan (TL) | |
| Bosi et al. (2023) |
| Bosi et al. (2023) |
Shikaribetsu Lake, Shikaoi, Kato District, Tokachi Subprefecture, Hokkaidō Prefecture, Japan