Important Update News

The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.

We are grateful to NASA for the funding of this effort.

Kotoite R060940
Name: Kotoite
RRUFF ID: R060940
Ideal Chemistry: Mg3(BO3)2
Locality: Hol Kol mine, Samdung, near Pyongyang, Suan County, North Korea
Source: Michael Scott S101243 [view label]
Owner: RRUFF
Description: Aggregate of pale green micro grains
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
CHEMISTRY 
RRUFF ID: R060940.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Mg2.98Fe0.02)Σ=3(BO3)2 ; trace amounts of Mn; B2O3 estimated by difference
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.
Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R060940
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
DOWNLOADS:

Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R060940.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.393(2)Å    b: 8.418(2)Å    c: 4.504(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 204.5(4)Å3    Crystal System: orthorhombic
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

DOWNLOADS:

DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
X Min:    X Max:    X Sort:
REFERENCES for Kotoite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Foshag W F (1939) New mineral names, American Mineralogist, 24, 406-406   [view file]

Watanabe T (1939) Kotoit, ein neues gesteinsbildendes Magnesiumborat, Mineralogische und Petrographische Mitteilungen, 50, 441-463   [view file]

Effenberger H, Pertlik F (1984) Verfeinerung der kristallstrukturen der isotypen verbindungen M3(BO3)2 mit M=Mg, Co und Ni (strukturtyp: kotoit), Zeitschrift für Kristallographie, 166, 129-140   [view file]