I looked up the chemical that burned green and the closest one to the fireball color is Copper (II) Sulfate.
Location
Address
Sparks, NV
Latitude
39° 31' 38.78'' N (39.53°)
Longitude
119° 42' 29.43'' W (-119.71°)
Elevation
1339.14m
Time and Duration
Local Date & Time
2021-10-12 22:26 PDT
UT Date & Time
2021-10-13 05:26 UT
Duration
≈3.5s
Direction
Moving direction
From up right to down left
Descent Angle
217°
Moving
Facing azimuth
119.62°
First azimuth
133.43°
First elevation
90°
Last azimuth
119.37°
Last elevation
23°
Brightness and color
Stellar Magnitude
-18
Color
Burned a neon green, and then twinkled out into a yellow gold sparkle.
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
Unknown
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Unknown
Remarks
-
Fragmentation
Observation
Yes
Remarks
The fireball burned a bright green and then sparkled out almost like a firework that didn't explode but still sparkled. The fragments were a bright yellow gold color. There were about 5 or 6 sparkled before it went completely dark.
