Hey there - REALLY freaky you posted this - I accidently found a list present - I opened it and it was a white howlite key ring - I LOVE IT - its sooo helping me feel properous and comfortable - I was sooo happy (still not sure who gave it to me)...
As you correctly state above they are most definately different!
Crystal Element: Magnesite
Magnesium Carbonate is an ore of magnesium
Expression: Metamorphic in origin, magnesite is a white carbonate. Magnesite enhances intellectual ability, inquisitiveness and accuracy.
Message: Close examination, action, prompt relief.
Sun Focus: You have a skilful probing mind; others appreciate your skill, sensibility and credentials.
Affirmation: I seek a catalyst to repair and restore wellbeing.
•Associated Minerals calcite, dolomite, aragonite, strontianite and serpentine.
•Other Characteristics: effervesces easily only in hot dilute hydrochloric acid.
Expression: White Howlite is a calcium-rich, evaporite mineral.
Calcium Boro-silicate Hydroxide.
White Howlite is an uplifting stone promoting good fortune, abundance, prosperity, comfort and security.
Message: Health, happiness and friendship – these simple pleasures raise the spirit.
Sun Focus: You have a great capacity to show concern, encouragement and affection to those in need.
Affirmation: I am grateful for the abundant goodness in my life.
Other Characteristics: Sometimes fluoresces a blue, yellowish white or off white color under shortwave UV light and dissolves in hydrochloric acid solution without bubbling.
Associated Minerals include colemanite, ulexite, anhydrite, gypsum, colemanite and clays.
well - just some of the things I think and feel and have researched on these TWO interesting - under valued - usually white crystal elements
blessings
MARINA