Blue Blue Flames

What causes blue & green flames in a bonfire? No excellerant was used. The wood was oak.?

The wood was placed on an existing fire, the colors were very vibrant. There was even some pink & purple flames.

It might have been impregnated with chemicals to protect it from the influence of insects and fungi. For protection to fungi, copper salts are often used. Those salts usually give blue-green flames when burned.

MILLER BLUE FLAME WELDING HAT SIZE 7-1/2 230539 $14.38

MILLER BLUE FLAME WELDING HAT SIZE 7-1/8 230536 $14.38

MILLER BLUE FLAME WELDING HAT SIZE 7 230535 $14.38

MILLER BLUE FLAME WELDING HAT SIZE 7-1/4 230537 $14.38

MILLER BLUE FLAME WELDING HAT SIZE 7-3/8 230538 $14.38

MILLER BLUE FLAME WELDING HAT SIZE 7-3/4 230540 $14.38

Chicago Auto-Darkening Helmet w/ Blue Flame $51.99

CHICAGO ELECTRIC WELDING HELMET – Auto-Darkening – Blue Flame Design BNIB $29.99

BLUE FLAME AUTO DARKENING WELDING HELMET MIG TIG ARC $44.97

Weldmark Variable Shade Auto-Darkening Welding Helmet – BLUE FLAMES BF8VS9-13 $189.99

Miller Welders 21″ Wide BLUE FLAMES Decal, Brand New $14.97

Chicago Electric Blue Flame Auto Darkening Welding Hood $59.99

Carhartt FR Flame Resistant Jacket Nomex IIIA Dark Navy Quilt Lined $50.00

Welding Bib Apron Flame Retardant Cotton – Navy Blue – 36″ x 24″ $14.64

Welding Jacket Cape Sleeves – Cotton Flame Retardant – Navy Blue – Large $27.25

Welding Bib Apron Flame Retardant Cotton – Navy Blue – 42″ x 24″ – Yellowjacket $16.56

Welding Jacket Cape Sleeves – Cotton Flame Retardant – Navy Blue -Medium $27.25

Miller 230540 Welding Cap, Blue Flame, Size 7-3/4 $17.15

Black Stallion 5X-Large Bsx Bxrb9C Blue With Blue Flames Welding Jacket $43.90

Black Stallion Medium Bsx Bxrb9C Blue With Blue Flames Welding Jacket $31.93

Black Stallion 2X-Large Bsx Bxrb9C Blue With Blue Flames Welding Jacket $35.11

Black Stallion Small Bsx Bxrb9C Blue With Blue Flames Welding Jacket $31.93

Black Stallion 3X-Large Bsx Bxrb9C Blue With Blue Flames Welding Jacket $35.87

Black Stallion Large Bsx Bxrb9C Blue With Blue Flames Welding Jacket $31.93

Miller 230539 Cap, Welding, Blue Flame, Size 7 1/2 Pkg $17.15

Black Stallion X-Large Bsx Bxrb9C Blue With Blue Flames Welding Jacket $31.93

Black Stallion 4X-Large Bsx Bxrb9C Blue With Blue Flames Welding Jacket $44.69

Miller 230538 Cap, Welding, Blue Flame, Size 7 3/8 Pkg $17.15

Miller 230537 Cap, Welding, Blue Flame, Size 7 1/4 Pkg $17.15

Miller 230536 Cap, Welding, Blue Flame, Size 7 1/8 Pkg $17.15

Miller 230535 Cap, Welding, Blue Flame, Size 7 $17.15

BLUE FLAMES ON BLACK WELDING CAP $9.00

Tillman 6218B 18″ Blue Flame Resistant Welding Sleeves $7.92

Nomex Kevlar Blue Flame Resistant Vest – XL $10.00

Blue Flame Design Auto Darkening Welding Helmet $89.99

Auto Darkening Welding Helmet with Blue Flame Design $49.99

Welding Coveralls -Flame Retardant -32″ Inseam- Blue – Large – Yellowjacket $35.21

Welders 30″ Jacket -Navy Blue – Flame Retardant Treated – Large – Yellowjacket $34.30

Welders Pants – Flame Retardant – Navy Blue -32″ Inseam – XXL – Yellowjacket $52.68

Welding Coveralls – Flame Retardant -32″ Inseam- Blue – Large – Yellowjacket $80.75

Welding Coveralls – Flame Retardant -32″ Inseam- Blue – XXL – Yellowjacket $88.85

Welders Pants – Flame Retardant – Navy Blue -32″ Inseam – Large – Yellowjacket $47.86

Smith & Wesson Auto Dark Welding Helmet Blue Flames *New in Packaging* Huntsman $99.00

Revco Flame Resistant Cotton Navy Blue T-shirt Size 2XL $23.75

Revco Flame Resistant Cotton Navy Blue T-shirt Size 3XL $25.95

Revco Flame Resistant Cotton Navy Blue T-shirt Size XL $21.50

Revco Flame Resistant Cotton Navy Blue T-shirt Large $21.50

BoneCaps “Blue Flames” Size 7 1/2 ONLY Lined High Crown Welding Hat $13.00

Welding Coveralls – Flame Retardant -32″ Inseam- Blue -3XL – Yellowjacket $96.88

Welding Coveralls -Flame Retardant -32″ Inseam- Blue – XXL – Yellowjacket $80.75