Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 6
Number of individual trees analyzed: 6
Number of specimens: 11
Number of measurements: 39
Max PZC read (of all measurements): 23.3
Min PZC read (of all measurements): 12.5
Max PZC average on one log: 21.5
Min PZC average on one log: 13.0
PZC Average of all logs: 17.1

Species: mansonia altissima
Family: Malvaceae
Clade: Angiospermae
Description: Mansonia altissima is a large, deciduous West African tree known for its straight, cylindrical bole and distinctive flaky, scaly bark often with reddish-brown patches. It features pinnate leaves and produces small, yellowish-white flowers followed by characteristic winged fruits (samaras). The species is highly valued for its durable and attractive timber.
Other Local Names: Koul, Guissépa, Aprono, Mansonia, Ofun, Koul, Mansonia

Reference Colour: Brown
Texture: Fine
Grain: Straight
Interlocked Grain: Absent
Notes: Yellowish brown to dark grey brown with purplish glints. Veins more or less visible.

Diameter: 40÷70cm
Density @12% MC: 660kg/m³
Janka Hardness: 1140lbf
Crushing Strength @12%MC: 60MPa
Static Bending Strength @12%MC: 110MPa
Longitudinal Modulus of Elasticity E: 13.62GPa
Volumetric Shrinkage Coefficient: 0.44% per %
Total Tangential Shrinkage TS: 7.4%
Total Radial Shrinkage TS: 4.6%
T/R Anisotropy Ratio: 1.6-
Fibre Saturation Point: 28%
Thermal Conductivity: 0.22W/mk
Sapwood Thickness: 2÷5cm
Sapwood Demarcation: Clearly demarcated

Resistance to Decay: Class 1 – very durable
Resistance to Dry Wood Borers: Class D – durable (sapwood demarcated, risk limited to sapwood)
Resistance to Termites: Class D – durable
Treatability: Class 4 – non-treatable
Use Class Covered by Natural Durability: Class 3 – not in ground contact, outside Atlas of Tropical Timber Species BÉTÉ /MANSONIA*
Durability Notes: Although Mansonia displays class 1 durability against decay (very durable) in the NF EN 350 standard, it should be noted that it is sensible to Coriolus versicolor white rot attacks. According to the European standard NF EN 335 of May 2013, performance length might be modified by conditions in which it is used.

Log Buoyancy: Does not float
Log Conservation: Moderate (treatment recommended)
Drying Rate: Normal
Drying Risk of Distortion: No risk or very slight risk
Drying Risk of Case Hardening: No known specific risk
Drying Risk of Checking: High risk

Blunting Effect: Normal
Sawing Tooth: Ordinary or alloy steel
Machining Tool: Ordinary
Suitability for Peeling: Good
Suitability for Slicing: Good
Sawing Machining Notes: Sawdust is considered allergenic and can have a toxic effect.
Assembly Nailing Screwing: Good
Additional Notes: Resistant to one or several acids
End Uses: Turned goods, Glued Laminated, Shingles, Exterior joinery, Coffins, Interior joinery, Framing, Moulding, Ship building (planking and deck), Flooring, Cabinetry (high-end furniture), Sliced veneer, Veneer for back or face of plywood, Rolling shutters, Panelling

Source 1: Tropical Timber Atlas, Editions Quae, e-ISBN 978-2-7592-2770-9