SCP draft inspired from a 3Ds Max physics demonstration video

Right lets see if that works
Recorded Footage from 21.9.1991 containment failure.

SCP-XXXX specimen during Incident XXXX-A

Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: SCP-XXXX is to be contained in the foundation owned Mochdre Limestone Mine and may be free to walk through the lower level caverns while monitored. A collection team is to retrieve SCP-XXXX deposits every 48 hours. SCP-XXXX fragments may be stored in standard mineral shipping containers, maintaining the guise of an operational mine. See Experiment log XXXX-B

SCP-XXXX is to be stored within site XX Extreme Temperature Research Facility, contained in a 0.5m diameter pressurised tank at temperatures excess of 2100°F/1150°C to maintain a constant molten state.
During standard temperature experimentation, testing chambers are to exceed 20mx20m in size with excess storage tanks of a minimum 26,000 gallons/120000 litres available to contain excess fragments from SCP-XXXX, with test duration kept as short as possible.
Due to the exponential nature of an uncontrolled specimism duplicating, and how ineffectual small arms/low yield weapons are on SCP-XXXX, specialist armature capable of generating extreme heat fields (ie. Thermal Amplification Rifles 'TAR' guns, Volatile Incendiary Implosion Explosives 'VII grenades, etc.) are to be kept on site in the event of containment failure to reduce SCP-XXXX to a molten form as quickly as possible.

Description:
SCP-XXXX are pseudo-immobile limestone statues of humanoid appearance approximately 6'1" tall.
While the rock comprising SCP-XXXX is completely static (and in fact, seemingly non-anomalous in nature), SCP-XXXX is able to achieve motion via spontaneous replication of it's form, moving in a staggered stop-motion-like nature. The generation of these states of motion destroys previous states, which proceed to crumble and collapse.

Non-corporeal Hypothesis

As far as we can tell, there is absolutely nothing special about the material SCP-XXXX is made from, nor any indication thus far in where the material comes from. New limestone appears instantaneously, displacing substances in that location. It is possible that we are seeing a physical manifestation of a higher dimensional entity, leaving 'imprints' in our world. This would go some way to explain it's near unstoppable nature, creating new material regardless of damage sustained. This would raise questions as to why heat would attract and affect a non-corporeal creature and testing this hypothesis has been difficult thus far.
-Dr ██████

SCP-XXXX appears docile in nature and shows little signs of intelligence. See Incident XXXX-A.
In previous experiments SCP-XXXX has wandered aimlessly inside it's chamber, with no reaction to stimulus.

Concerningly, the 'waste product' produced by SCP-XXXX appears to be produced without limit, so long as SCP-XXXX continues to move. When a space has become entirely filled by SCP-XXXX debris, pressure rises to a critical point.¹

SCP-XXXX was discovered by local law enforcement attempting to survey the extent of nearby rockslides which had blocked several roads within the ████████ district area.²

Addendum XXXX-A
SCP-XXXX is capable of spontaneous replication of independant SCP-XXXX instances, and will seek out nearby heat sources, mechanical or biological in nature. See Incident XXXX-A.

+ Incident XXXX-A

At this point in time, SCP-XXXX was undergoing an extreme temperature experiment

Footnotes

1. It has been theorised that were boundary walls able to contain sufficient pressure SCP-XXXX could undergo a fusion reaction.

2. We know that SCP-XXXX was either recently created, or gained it's replication ability in a relatively short space of time before it was discovered. Were this not the case, we surely would have noticed a mountain of rubble…
Dr ███████ Head of SCP-XXXX Research