Libethenite Blue Pigment

Description
Libethenite Blue is a handmade synthetic mineral libethenite, a copper phosphate mineral (Cu₂(PO₄)(OH)). It produces a vibrant, slightly cool blue with a crystalline, granular texture and a soft mineral depth that lightens as it is ground finer.

In use, Libethenite gives rich, mineral blues for skies, water, drapery and decorative work, with the gentle granulation of a ground crystal. It mixes with earths for muted, natural greens and with yellows for warmer foliage tones. As a copper mineral, it should be kept away from strong acids and sulfur containing pigments.

History
Libethenite was named in 1823 after the mining town of Libethen in Slovakia, now Ľubietová, where it was first found in the copper mines. Copper phosphate minerals such as libethenite and pseudomalachite have occasionally been identified in historical paintings alongside malachite, but they are far rarer. Today libethenite is typically a collector's mineral, and as a pigment it offers a rare copper blue.

Pigment Information
Pigment Type: Synthetic (Inorganic) copper phosphate mineral
Source: Synthetic libethenite (Cu₂(PO₄)(OH))
Origin: U.S.A.
Suitable Mediums: Watercolor, Gouache, Tempera, Casein, Acrylic, Encaustic, Oil
Lightfastness: Excellent
Opacity: Semi-transparent
Other Names: Copper Phosphate Blue, Synthetic Libethenite
Color Index Code: N/A

Health and Safety
For art use only. Not for cosmetic, food or children's use.
Keep out of reach of children and pets. Do not eat, drink or smoke while working.
Avoid creating or breathing dust. Work in a ventilated area and wear a NIOSH approved dust respirator (P100 or better) when handling dry pigment.
Wear gloves and eye protection. Wash hands and work surfaces after use, and never rinse pigment into drains.
Do not spray apply, sand or burn.
If swallowed or if you feel unwell, contact a poison control center (U.S. 1-800-222-1222) or a doctor.
Safety Data Sheet available on request.